Thanks! My A2000 had an incredibly loud MFM hard disk in it when I got it, too. So it definitely sounded a bit like a jet engine when I first turned it on. :D
Casting my mind back 32-and-a-bit years, when I bought my Amiga 1000 in November 1986, right from new its fan had an annoying 'thrum, thrum, thrum' sound. I knew nothing about computer innards at the time, but I wish I'd known it was relatively easy to fit a replacement. [Edit:] what, a dislike on a fan replacement video?! Is it a Commodore purist angered that it's 'no longer original'?
I guess Im asking randomly but does someone know a trick to get back into an Instagram account?? I stupidly forgot the account password. I would love any tricks you can offer me.
@Titus Terrence i really appreciate your reply. I got to the site on google and Im waiting for the hacking stuff now. Takes quite some time so I will get back to you later when my account password hopefully is recovered.
Perfect fan for it, they're well engineered & I think the colour works well. I was nearly yelling at the screen for you to fit a standard 3 pin fan power socket but as you said, it isn't much effort to solder a new fan if the Noctua ever dies! Great work as always Jan :-)
Dear Jan, I'm always impressed by your work and your English. You are not only fluent but you regularly use expressions I would only expect native English speakers to use.
Thank you! I learned a lot from other UA-camrs, I guess. I also studied English literature for a bit (but Shakespeare doesn't help much with electronics vocabulary unfortunately...).
Thank you very much for this, Your my friend for life now. I've just swapped out my amiga 2khd fan, with a new one, as in your video, and I seem to have a slightly differenent power supply unit, as it was a matter of moding the cable that weas attached to the fan with the correct placement of cables i.e. red black correctly into the little plug. So no soldering for me, but without your video, I would have been too aprehensive to even try. So cheers :)👍
I just put one of these in my Macintosh IIfx and it made the computer usable without noise cancelling headphones. I think I’ll do the same to my amiga 2000. Thanks for the video!
I just got A2000 that has an incredibly loud fan. I don't remember our A2000 from the 80s having that loud fan. Definitely getting a Noctua switching. Thanks.
Ich möchte mich nochmal bei dir für das Video bedanken! Bei meinen 2k wollte ich auch den Lüfter ersetzen und habe den 3pol Stecker, da dieser bis auf die dritte Ader den Stecker des alten Lüfter entsprach, einfach auf die Steckleiste im Netzteil gesteckt. Funktionierte aber nicht. Dann habe ich die einfach die Adern nach deinem Vorbild verlötet... Wunderbar leise laufender Lüfter im Netzteil! 😁
Ah. A nice way to start the day. I smiled when I saw the fan. Exactly the same is I’ve got sitting on my workbench awaiting the delivery of the broken 2000. This rate you’d have finished you’re restoration before I get delivery of mine ;-).
Another brand I recommend are Cooler Master, as their 120mm fans can be had in a 4 pack for $13 USD with free shipping, and a single 80mm fan from them can be had for as little about $7 USD with free shipping. So I always find good value in them when doing projects like this, or building modern/ish computers on the cheap.
Did the same to my A2000 PSU, even the same Noctua fan, like 2-3 years back. :) Mine is with a Lite-On PSU which didn't have the old fan riveted in fortunately. I put a matching connector on the old fan wires and used the low noise adapter too. Ended up with a system which is nearly inaudible, quite nice. I still need to recap my PSU as well.
Hi, i did the replacement today.. and my PSU refused to start... i was afraid to have damaged my motherboard or the the PSU... i connected back the old fan and every thing is OK... do you have a solution for the replacement of the fan with a quiet one. Tks
@@supporttrombone5744 Just connect 2 car parking light bulbs for 12V each in series in parallel to the 12V for the fan, so they just draw 1/4 of the nominal 2 watts. those 0,5w in parallel with the new fan and the PSU will start. and the low glowing bulbs will last forever.
@@rarbiart Thanks for your help, i wanted to find a Fan which has the same power consomption but they were MORE noisy than the old one !!! I put back the new NOCTUA (silent) and i found a nice light green bulb... i had to make some modification at the casing of the computer and to the power supply... now it is perfect !!!
Great video! I stumbled across it when I was looking for help replacing a fan on an old Gateway 2000 Pentium 3. There is only 1 fan in the case and that is in the power supply and it's so loud!
That would have been smart. Didn't think of that. But then again, this will probably last for a while and soldering on new wires is not that much of a problem.
On the side of the fan shell you'll find two embossed arrows, indicating fan spin and airflow direction. More reliable for installation than where the label's facing.
Those fans arnt that bad I mean $15 ( newegg ), I would say well worth it as it keeps it more pure Amiga vs having to mod any further. Looking forward to the journey on this one!, as a side note yes its making me feel rather nostalgic ;)
I think the yellow wire is for RPM signal. I guess modern computers look for fan RPM and shut down the computer if the fan shows zero RPM to prevent overheating damage?
Thanks! Usually you can get the "lesser" Amigas (which they really aren't) like the A500 for reasonable money, especially if you are willing to put some work in. Go for it! ;)
@@JanBeta Thanks i'll be searching ebay listings for the 500, the problem is that i live in spain and the shipment from (for example) US is MASSIVE, in spain these computers weren't so common sadly :c Btw thank you so much for replying, I love your videos, keep the good work!
@@DEMENTO01 I think you should avoid to buy from US (NTSC video standard + 110volt 60hertz power), it's better an european one (PAL video standard + 220volt 50hertz powers supply). Be careful. Cheers, M
You have choosen one of the best fans available. In terms of rpm/12volt/noise/airflow it's probably the best you can buy. Perfect choice! The three kings are noctua, noiseblocker and bequiet.
I'd have recommended first covering all the exposed electrical components and contacts both outside and inside the PSU before drilling out any of the metal rivets holding the fan to prevent any of resulting metal fragments from contaminating the PSU and causing electrical shorts later. The clock not detected may be due to the RTC chip being in an indeterminate state because the RTC battery was removed. Saw this in a recent Amiga A501 repair video that replaced the rechargeable RTC battery with a 3v lithium cell battery holder. Try using the sysclock utility to set the time on the RTC chip (initializing it) and then read it back.
I'm guessing they riveted the fan in because, rivets are cheaper than screws, rivets are perhaps more repeatable without errors than screws, and rivets require less labor and/or machine time than screws, and Commodore was all about shaving every last cent off production cost.
For sure, I have two A2000 and one have rivets, the other (a bit older) have screws. More, the newer one (!) have a transparent tape for naming ports, while on the older one, port names are printed directly on the case.
The drilling worked surprisingly well this time! However, you should consider getting a Dremel, which is really a really good tool with fine control over your work - also when cutting metal.
I have a Dremel tool (well, a Proxxon one) but didn't use it for the rivets after some research. The drill seemed to be the cleaner option in this particular case. :)
Well done - you can make a circuit to generate -5 volts from +5-12 volts - check out a ICM7660 - there's lots of variations of this of course (I wouldn't be surprised if the out of the box Amiga power supply actually uses these...).
Job well done! The color of the fan matches up perfectly with the back of the A2000 and it looks amazing! What is also amazing how much crappy stuff Commodore have built into these quite expensive machines.
It is just the technology of the time. Back then you didn't get super silent fans in power supplies and if you were aiming at a low noise machine you could buy an A500.
@@danielmantione Maybe you're right. I thought Sunon existed back then and using a quality fan was possible. I also was refering to the PSU itself, but maybe even IBM used cheapo taiwanese PSUs as well.
@@JanBeta Yeah, pile it high sell it cheap - Tesco :) ... now we know why both of these companies have blue-white-red logos :) ... oh, just found another connection, have you guys ever heard about tesco's discounter brand Jack's? :D
The old fan has an airflow of 0.93m3/m, the new one you inserted only 0.58m3/h (Noctua.at says 34,8 per hour). So the new one blows considerably LESS air. That's why I used "NF-R8 redux-1800" for my A2000s, those blow 0.88m3/m.
wie kann ich prüfen ob das netzteil korrekt arbeitet? (multimeter) ich habe hier nen 2000er, hab die tonne rausgenommen und die lötaugen gesäubert und vorsichtig den lack abgetragen der locker war. wie prüfe ich das board (multimeter) bevor ich das risiko eingehe alles unter strom setze und abfackel? erstzt du die kondensatoren auf dem board auch?
Hi Jan, could you share the brand and preferably identification number of the speakers you have by the tv? For some reason I like how they look and would like to try to find them on ebay or somewhere.
They are Behringer MS-20, I won’t recommend them though. Bought them for semi serious audio work and they are not very useful for that. Okay as general purpose computer speakers and video editing monitors.
Prety fun to see this, by chance, I found a A2000 in the basement of my brother house, I plug it, id there was a AD&D disk inside of one of the 2 floppy, need to change from a floppy to the other, but it boot. Im curius to see the battery....
When I replaced the fan in my A2000, I used 3M Scotchlocks to tie the cables together. I though I was really smart until I saw this and realized that someone already beat me to the punch using Noctua fans lol.
Despite my background in HW repair, For reasons that cannot explain when I swap out my old 12v fan for this new one the power supply cannot sustain and load. In other words the NF-A8 ULN Noctua fan runs if the power supply is not hookup to the mother board. If I turn on the PS with it plugged in to the MB it shuts down about 1 second after turning on. If I disconnect the FAN and try it runs even less time. Put the old fan back in and the PS runs the MB no problem. Red to red black to black. I did not use the yellow wire. My A2000 supply is Model 20504-SD made by ElEC & ELTEK. And ideas?
It seems that some of the Amiga PSUs check if the fan is running by measuring the current draw. If there's not enough current flowing to the fan, they won't turn on the supply or turn it off after a short time. Probably the modern fan draws too little current to trigger that circuit. Maybe adding a resistor would help?
@@JanBeta Thank you for the quick response. I reached the same conclusion. So I put a1200 Ohm 1W resister across the fan leads. In my pre assemble not everything back together test It stayed on so I thought I was out of the woods. However after final assembling of the machine it shut down again but took longer. It was not instant like before. I think I may have only added .01 Amps to the poultry .05 of the noctua. So that is still less than 1/2 the .12 amps my old fan pulled. I am a little hesitant to put less resistance I would need higher wattage resisters more heat yada yada. I may have to put back the noisy fan :[
Hi Jan, that quiet adapter with the fan may well be a temperature thermistor type thing that will ramp up speed depnding on ambient temperature (inside the PSU) so could perhaps be not even turned on until needed? Not 100% certain, but with something like Noctua I don't think they'd just throw a resistor in and call it a day :-) Maybe another upgrade when you re-cap that power supply ;-)
I think some versions of the A2000 PSUs have circuitry that monitors if the fan is working by measuring the current. Modern fans draw a lot less so it might not trigger the circuit which in turn doesn’t allow the PSU to fully power up. Maybe adding a resistor to the wires that go to the fan will fix it (even though it’s a workaround of course).
Please, please DO a power supply recap video. To me it would mean the world, not just to watch you refurbish that Amiga, which is pleasant enough, but also because I have some gear I'd like to try to repair with such big, life-threatening caps, and I don't really know how to safely discharge them. I picked up an audio amp from the trash in hopes it might be repairable, but I'm too scared to try because of that, and I'd like not to have to bring it back to the trash, it would be such a pity, but keeping the thing forever and not working on it would make no sense either!
Just noticed your comment here. Might be too long ago to be of interest, but anyway, here goes. Electrolytic capacitor have a rather high self-discharge, so if the device has been stored for a year or two you can pretty much be 100% sure they are discharged. Also, if you want the make double sure, check that the power supply is not connected to mains and turn it on. Whatever charge might have been left will then quickly be dissipated by the circuit it supplies. As a master in telecommunications I have never had any problems doing it like this. The only exceptions I know of are with tube amplifiers. Partly they operate on very high voltages (700V+), partly the power supplies therefore tend to use paper or ceramic caps that have significantly lower self discharge. In those cases I would be vary, and old CRTs are also a problem. The rear parts often tend to build up static charges - by far the worst electric chocks I've experienced have been from accidentally touching those... A normal PC power supply or audio amplifier, however, never poses a problem if you just do as I described.
I'd guess to reduce cost and to make for a reliable connection. Not very serviceable but probably they'd rather replace the whole PSU if something went wrong during warranty.
Hmm.. it's saying "Battery backed up clock not found" - did you remove the clock chip ? If not, thats a sign of a problem. The clock should still be found even if the battery is removed.
Oh, I didn't even notice that. You are right. It seems to sometimes not see the clock, on other boot ups it did. I'll have to investigate. Maybe there's a dodgy trace somewhere that I didn't see the first time around.
The A4000 PSU is somewhat different, but the fan stuff should be more or less the same. IIRC, the fan sits on the inner side of the PSU and sucks air from the computer case into the PSU instead of blowing air out of the PSU through the back. Are you saying that your original A4000 PSU is still alive? Mine died already in the 90s, and I had to find a smallish AT PSU and transplant its guts into the PSU enclosure of my A4000.
I would say you should NEVER put a power supply without the -5 volt as it's usually used for OP-amps and they usually go boom if they are missing the -5 volt, potentially destroying the zorro cards.
Yes, I definitely agree. If you are not absolutely sure nothing in your machine needs the -5V, you risk damaging stuff. I think the usually applied workaround would be to use an 7905 voltage regulator to supply the -5V if the psu doesn't support that voltage.
I know exactly how I sound and I understand exactly how annoying I am but did you check the small value capacitors? :P They're kinda prone to dying with age no matter how good they were. Great video as always :)
Yes! Really happy I took the plunge and bought some decent screwdrivers. I only used the cheapest stuff before and it really makes a huge difference to work with these Wera ones now.
But why would the fan requirements of a PSU be any lower than those of any other application? I mean, in virtually any scenario that involves a fan you would want sufficient airflow and pressure, low noise and vibration, and high endurance and reliability. Am I right? Also, in all the desktop Amigas that I'm aware of, the single PSU fan provides the forced airflow to the whole system. These machines are becoming rare and precious, so I for one would definitely not skimp on the fan.
Oh, das wusste ich nicht. Das ist mal ein schlaues Konzept. Scheint ja in diesem Fall (falls das NT diese Prüfung macht) glücklicherweise genug Strom zu sein trotz modernem Lüfter.
You mean I could have drilled all the way through the rivet? I was a bit cautious because I didn't want to damage anything so I intentionally went with a size that didn't fit through the holes on the fan grill.
@@JanBeta You don't need to drill through them. It can help to drill into the rivet at an angle and rotate the the drill around (in a cone shape) to prevent drill bit biting into the rivet and causing the rivet to spin in place.
Good choice! I think I got the idea for this particular one from an old forum post somewhere. I used quite some Noctua fans before (in my modern PC, too) and I think they are worth investing in. ;)
It's usually the case that the line capacitors will be discharged, as there is either a bleed resistor, or the PSU runs until the energy in the line capacitors is drained. The main time to take precautions and discharge the caps is when you know the power supply has been energised recently, and there was no output. I've nearly come a gutser on this working on a TV power supply - the main MOSFET had failed, and there was nothing to discharge the cap. Fortunately I remembered before I stuck my fingers near it! I'd certainly recommend you replace the secondary side capacitors soon to keep it working well. The line side caps should be fine. Oh, and check for stinky RIFA capacitors too !
Ah, and again I'm learning something from you. :) I guess it doesn't hurt to be over cautious anyway, but good to know that they usually are drained. I'll replace the caps asap, just have to order some because I didn't have the right values in stock. Luckily, there's no RIFA bomb to be seen in this one. I learned about those the hard way a couple of years ago when an old amplifier I was working on went up in smoke. The smell! :P
While watching this video, my Amiga 2000 Power supply suddenly exploded and a lot of smoke rise up. No idea what caused that. Perhaps the fact that he wasn't in use for 15-20 years. I turned him on less than 10 minutes ago.
Please, once you're sure it works, best proceed to replace the capacitors. If they're 1988 you're taking serious chances of them going leaky or making damage to the computer.
Apart for replacing caps, dont forget to replace the thermal paste on those fets. It'd be amaizing if before replacing the caps, you could measure the ripple voltage and voltage rails before and after the refurbish
Is there a chance that we will see part 2 of the NAD 3020 repair? I'd be really interested in it. And... Noctua fan.. Everything worth doing is worth overdoing? *lol* I like it *tumbs up*
Ehrlich gesagt, ich habe nicht erwartet, dass der Bohrer sagte: "Sie wissen, wie spät es ist", aber wenn es funktioniert, bohren Sie es. I don't know why but power supplies have always scared me. I guess electric shock death is enough of a deterrent.
You could install a noisekiller (temperature regulated resistor) on the fan. It will increase the resistance when temperature is low, and reduce the resistance when temperature is high. But since you installed a low rpm fan, its probably no point.
Noctua fans are nice enough, but they could definitely dial the presentation down a few notches. I don't want to pay for a gift box when all I want is a fan.
Touching a capacitor with a finger hurts but it will not kill you. To kill you it would need to discharge through your chest. I.e. the current would have to travel from one arm to the other.
It might be a bit exaggerated that I mention it in the videos every time but I don't want anybody to get hurt if they follow what I do. Plus, if you have a weak heart or other issues chances are (albeit they are small) that they might actually do major harm to you,
I have done this by accident, touched the charging cap soldering points when i was moving it out of the way. Good thing the main power was disconnected. It was quite a shock, but i didnt die, and i didnt get "locked" to it.
I was enjoying the video until... 8:49 NOOOOOOOOOOOO!!!!!!! LOL! AND, you clipped it RIGHT at the connector without leaving any wire on the connector so that connector is now unusable. UGH. LOL! But all kidding aside, I personally would have probably kept the stock fan connector intact and added a corresponding connector on the power supply fan wires to mate up with it. Great mod though and looks great!
the color matches the case. good choice.
The harrier jet landing noise is the first thing I noticed when I turned on my A2000. Good video as always
Thanks! My A2000 had an incredibly loud MFM hard disk in it when I got it, too. So it definitely sounded a bit like a jet engine when I first turned it on. :D
Casting my mind back 32-and-a-bit years, when I bought my Amiga 1000 in November 1986, right from new its fan had an annoying 'thrum, thrum, thrum' sound. I knew nothing about computer innards at the time, but I wish I'd known it was relatively easy to fit a replacement. [Edit:] what, a dislike on a fan replacement video?! Is it a Commodore purist angered that it's 'no longer original'?
I guess Im asking randomly but does someone know a trick to get back into an Instagram account??
I stupidly forgot the account password. I would love any tricks you can offer me.
@Franco Brecken Instablaster ;)
@Titus Terrence i really appreciate your reply. I got to the site on google and Im waiting for the hacking stuff now.
Takes quite some time so I will get back to you later when my account password hopefully is recovered.
@Titus Terrence it worked and I now got access to my account again. I'm so happy!
Thank you so much you saved my ass !
@Franco Brecken you are welcome :)
Perfect fan for it, they're well engineered & I think the colour works well. I was nearly yelling at the screen for you to fit a standard 3 pin fan power socket but as you said, it isn't much effort to solder a new fan if the Noctua ever dies! Great work as always Jan :-)
Dear Jan, I'm always impressed by your work and your English. You are not only fluent but you regularly use expressions I would only expect native English speakers to use.
Thank you! I learned a lot from other UA-camrs, I guess. I also studied English literature for a bit (but Shakespeare doesn't help much with electronics vocabulary unfortunately...).
Thank you very much for this, Your my friend for life now. I've just swapped out my amiga 2khd fan, with a new one, as in your video, and I seem to have a slightly differenent power supply unit, as it was a matter of moding the cable that weas attached to the fan with the correct placement of cables i.e. red black correctly into the little plug. So no soldering for me, but without your video, I would have been too aprehensive to even try. So cheers :)👍
Looking forward to see the completed A2000!
I just put one of these in my Macintosh IIfx and it made the computer usable without noise cancelling headphones. I think I’ll do the same to my amiga 2000. Thanks for the video!
I just got A2000 that has an incredibly loud fan. I don't remember our A2000 from the 80s having that loud fan. Definitely getting a Noctua switching. Thanks.
Ich möchte mich nochmal bei dir für das Video bedanken! Bei meinen 2k wollte ich auch den Lüfter ersetzen und habe den 3pol Stecker, da dieser bis auf die dritte Ader den Stecker des alten Lüfter entsprach, einfach auf die Steckleiste im Netzteil gesteckt. Funktionierte aber nicht. Dann habe ich die einfach die Adern nach deinem Vorbild verlötet... Wunderbar leise laufender Lüfter im Netzteil! 😁
Great job. See Perifractic's new video on retrobrighting in the sun with no chemicals! Would help that A2000 keyboard shell!
Ah. A nice way to start the day.
I smiled when I saw the fan. Exactly the same is I’ve got sitting on my workbench awaiting the delivery of the broken 2000.
This rate you’d have finished you’re restoration before I get delivery of mine ;-).
Oh, thanks! This restoration is going to take a while still. I have quite some stuff planned for this machine. Can't wait to try it all out. :)
Just grabbed a cup of coffee when I saw this.
Good way to start a Sunday.
Hope you enjoyed the coffee and the video. ;)
@@JanBeta Most definitely Yes.
Another brand I recommend are Cooler Master, as their 120mm fans can be had in a 4 pack for $13 USD with free shipping, and a single 80mm fan from them can be had for as little about $7 USD with free shipping. So I always find good value in them when doing projects like this, or building modern/ish computers on the cheap.
Did the same to my A2000 PSU, even the same Noctua fan, like 2-3 years back. :) Mine is with a Lite-On PSU which didn't have the old fan riveted in fortunately. I put a matching connector on the old fan wires and used the low noise adapter too. Ended up with a system which is nearly inaudible, quite nice. I still need to recap my PSU as well.
Phihong! that's still a name brand today! BTW: Some A2000 PSUs refused to start if you put a regulated fan which drew too little current at start.
Hi, i did the replacement today.. and my PSU refused to start... i was afraid to have damaged my motherboard or the the PSU... i connected back the old fan and every thing is OK... do you have a solution for the replacement of the fan with a quiet one. Tks
@@supporttrombone5744 Just connect 2 car parking light bulbs for 12V each in series in parallel to the 12V for the fan, so they just draw 1/4 of the nominal 2 watts. those 0,5w in parallel with the new fan and the PSU will start. and the low glowing bulbs will last forever.
@@rarbiart tks. i'll check if i can find a fan in my old stuff which have the right power consomption. Again thanks.
@@rarbiart Thanks for your help, i wanted to find a Fan which has the same power consomption but they were MORE noisy than the old one !!! I put back the new NOCTUA (silent) and i found a nice light green bulb... i had to make some modification at the casing of the computer and to the power supply... now it is perfect !!!
Great video! I stumbled across it when I was looking for help replacing a fan on an old Gateway 2000 Pentium 3. There is only 1 fan in the case and that is in the power supply and it's so loud!
Yes, you most likely can mod that in a similar way. :)
I would have used the adapter cable to make a plug so you can change out the fan if it ever dies
because noctua
That would have been smart. Didn't think of that. But then again, this will probably last for a while and soldering on new wires is not that much of a problem.
@@JanBeta well at least it's a fully German pc now it has a Noctua fan in it! All it needs now is some retrobrite and it'll look great!
I think Noctua is actually an Austrian company but they at least speak the same language for the most part. ;)
Yes, and also would be easier to service
On the side of the fan shell you'll find two embossed arrows, indicating fan spin and airflow direction. More reliable for installation than where the label's facing.
Yes, you are right. I was so focused on the sticker side that I didn't think of looking for the markings.
Those fans arnt that bad I mean $15 ( newegg ), I would say well worth it as it keeps it more pure Amiga vs having to mod any further.
Looking forward to the journey on this one!, as a side note yes its making me feel rather nostalgic ;)
I'm glad to see it work so good. I would've probably mess this one up because I was assuming yellow is the 12v wire.
I think the yellow wire is for RPM signal. I guess modern computers look for fan RPM and shut down the computer if the fan shows zero RPM to prevent overheating damage?
yellow is 12v. red is 5v . the amiga psu outputs 5v.
I actually looked up the pinout and the yellow wire is the RPM reading from the Hall effect sensor (presumably) in the fan.
I love these amiga videos aaaaaaaaaa, I wish I had an Amiga tbh
Thanks! Usually you can get the "lesser" Amigas (which they really aren't) like the A500 for reasonable money, especially if you are willing to put some work in. Go for it! ;)
@@JanBeta Thanks i'll be searching ebay listings for the 500, the problem is that i live in spain and the shipment from (for example) US is MASSIVE, in spain these computers weren't so common sadly :c
Btw thank you so much for replying, I love your videos, keep the good work!
@@DEMENTO01 I think you should avoid to buy from US (NTSC video standard + 110volt 60hertz power), it's better an european one (PAL video standard + 220volt 50hertz powers supply). Be careful. Cheers, M
@@mark12358 Yeah, true, ty
At 11:25 you use a heat gun? What brand? Thank you. Nice work on the rivets. I though it was going to be much more complicated.
Nice Vlog Jan what a difference a new fan makes mate 😁😁😁 Kim 😁😁😁
Thanks mate! It's nearly too silent now to be honest... I'll fiddle around with some noisy HDD sometime. ;)
You have choosen one of the best fans available. In terms of rpm/12volt/noise/airflow it's probably the best you can buy. Perfect choice! The three kings are noctua, noiseblocker and bequiet.
I'd have recommended first covering all the exposed electrical components and contacts both outside and inside the PSU before drilling out any of the metal rivets holding the fan to prevent any of resulting metal fragments from contaminating the PSU and causing electrical shorts later.
The clock not detected may be due to the RTC chip being in an indeterminate state because the RTC battery was removed. Saw this in a recent Amiga A501 repair video that replaced the rechargeable RTC battery with a 3v lithium cell battery holder. Try using the sysclock utility to set the time on the RTC chip (initializing it) and then read it back.
I'm guessing they riveted the fan in because, rivets are cheaper than screws, rivets are perhaps more repeatable without errors than screws, and rivets require less labor and/or machine time than screws, and Commodore was all about shaving every last cent off production cost.
Yes, that must be it.
For sure, I have two A2000 and one have rivets, the other (a bit older) have screws. More, the newer one (!) have a transparent tape for naming ports, while on the older one, port names are printed directly on the case.
“That’s not going anywhere” said every single person who has strapped something down in a trailer/Ute/Pick up.
Ha, you‘re right. Maybe I should rivet the fan in! ;)
Screws are riveting, screw rivets.
Awesome video.... it's been a long time since I've seen a A2000 PSU 😁
Thanks! For me, too. I probably last saw the insides of an A2000 in person back in the 90s when I owned one.
Was that really the best colo(u)r you could find for a fan? Looks like it should be hooked up to a brown Zune!
The drilling worked surprisingly well this time! However, you should consider getting a Dremel, which is really a really good tool with fine control over your work - also when cutting metal.
I have a Dremel tool (well, a Proxxon one) but didn't use it for the rivets after some research. The drill seemed to be the cleaner option in this particular case. :)
Well done - you can make a circuit to generate -5 volts from +5-12 volts - check out a ICM7660 - there's lots of variations of this of course (I wouldn't be surprised if the out of the box Amiga power supply actually uses these...).
Job well done! The color of the fan matches up perfectly with the back of the A2000 and it looks amazing! What is also amazing how much crappy stuff Commodore have built into these quite expensive machines.
It is just the technology of the time. Back then you didn't get super silent fans in power supplies and if you were aiming at a low noise machine you could buy an A500.
@@danielmantione Maybe you're right. I thought Sunon existed back then and using a quality fan was possible. I also was refering to the PSU itself, but maybe even IBM used cheapo taiwanese PSUs as well.
I think the fans of the time were either rather loud or really expensive so Commodore went for the Commodore way. ;)
@@JanBeta Yeah, pile it high sell it cheap - Tesco :) ... now we know why both of these companies have blue-white-red logos :) ... oh, just found another connection, have you guys ever heard about tesco's discounter brand Jack's? :D
Good video Jan!
The old fan has an airflow of 0.93m3/m, the new one you inserted only 0.58m3/h (Noctua.at says 34,8 per hour). So the new one blows considerably LESS air. That's why I used "NF-R8 redux-1800" for my A2000s, those blow 0.88m3/m.
wie kann ich prüfen ob das netzteil korrekt arbeitet? (multimeter)
ich habe hier nen 2000er, hab die tonne rausgenommen und die lötaugen gesäubert und vorsichtig den lack abgetragen der locker war. wie prüfe ich das board (multimeter) bevor ich das risiko eingehe alles unter strom setze und abfackel? erstzt du die kondensatoren auf dem board auch?
Hi Jan, could you share the brand and preferably identification number of the speakers you have by the tv? For some reason I like how they look and would like to try to find them on ebay or somewhere.
They are Behringer MS-20, I won’t recommend them though. Bought them for semi serious audio work and they are not very useful for that. Okay as general purpose computer speakers and video editing monitors.
Prety fun to see this, by chance, I found a A2000 in the basement of my brother house, I plug it, id there was a AD&D disk inside of one of the 2 floppy, need to change from a floppy to the other, but it boot. Im curius to see the battery....
Hallo , wie immer klasse Video .Ich würde das Lüftergitter ablassen die machen eh keinen Sinn ausser das die Lüfter lauter werden dadurch.
When I replaced the fan in my A2000, I used 3M Scotchlocks to tie the cables together. I though I was really smart until I saw this and realized that someone already beat me to the punch using Noctua fans lol.
Jan, can you please indicate how you connected the cable ? On noctua side, Black is solder to blue or red ?
Black is negative, soldered to blue. Red is positive on both devices.
@@JanBeta Thanks !!!
Despite my background in HW repair, For reasons that cannot explain when I swap out my old 12v fan for this new one the power supply cannot sustain and load. In other words the NF-A8 ULN Noctua fan runs if the power supply is not hookup to the mother board. If I turn on the PS with it plugged in to the MB it shuts down about 1 second after turning on. If I disconnect the FAN and try it runs even less time. Put the old fan back in and the PS runs the MB no problem. Red to red black to black. I did not use the yellow wire. My A2000 supply is Model 20504-SD made by ElEC & ELTEK. And ideas?
It seems that some of the Amiga PSUs check if the fan is running by measuring the current draw. If there's not enough current flowing to the fan, they won't turn on the supply or turn it off after a short time. Probably the modern fan draws too little current to trigger that circuit. Maybe adding a resistor would help?
@@JanBeta Thank you for the quick response. I reached the same conclusion. So I put a1200 Ohm 1W resister across the fan leads. In my pre assemble not everything back together test It stayed on so I thought I was out of the woods. However after final assembling of the machine it shut down again but took longer. It was not instant like before. I think I may have only added .01 Amps to the poultry .05 of the noctua. So that is still less than 1/2 the .12 amps my old fan pulled. I am a little hesitant to put less resistance I would need higher wattage resisters more heat yada yada. I may have to put back the noisy fan :[
Great work!
Hi Jan, that quiet adapter with the fan may well be a temperature thermistor type thing that will ramp up speed depnding on ambient temperature (inside the PSU) so could perhaps be not even turned on until needed? Not 100% certain, but with something like Noctua I don't think they'd just throw a resistor in and call it a day :-) Maybe another upgrade when you re-cap that power supply ;-)
Great video, and I also use Noctua fans for my PC :)
Thanks! Yes, I have at least one Noctua fan in my PC as well. Used to use more of them in my days as an audio guy for low noise and reliability.
O did this but my amiga refused to boot up. I put back the old fan and it works again? Any idea why?
I think some versions of the A2000 PSUs have circuitry that monitors if the fan is working by measuring the current. Modern fans draw a lot less so it might not trigger the circuit which in turn doesn’t allow the PSU to fully power up. Maybe adding a resistor to the wires that go to the fan will fix it (even though it’s a workaround of course).
@@JanBeta I will try adding a resistor and see from there. thx mate :)
Also a fan of Noctua. 😁 The Redux range is more economical. And it's black so more innocuous.
Although in this particular case the beige seems to fit right in. :)
Please, please DO a power supply recap video. To me it would mean the world, not just to watch you refurbish that Amiga, which is pleasant enough, but also because I have some gear I'd like to try to repair with such big, life-threatening caps, and I don't really know how to safely discharge them. I picked up an audio amp from the trash in hopes it might be repairable, but I'm too scared to try because of that, and I'd like not to have to bring it back to the trash, it would be such a pity, but keeping the thing forever and not working on it would make no sense either!
Just noticed your comment here. Might be too long ago to be of interest, but anyway, here goes. Electrolytic capacitor have a rather high self-discharge, so if the device has been stored for a year or two you can pretty much be 100% sure they are discharged. Also, if you want the make double sure, check that the power supply is not connected to mains and turn it on. Whatever charge might have been left will then quickly be dissipated by the circuit it supplies. As a master in telecommunications I have never had any problems doing it like this. The only exceptions I know of are with tube amplifiers. Partly they operate on very high voltages (700V+), partly the power supplies therefore tend to use paper or ceramic caps that have significantly lower self discharge. In those cases I would be vary, and old CRTs are also a problem. The rear parts often tend to build up static charges - by far the worst electric chocks I've experienced have been from accidentally touching those... A normal PC power supply or audio amplifier, however, never poses a problem if you just do as I described.
more videos please :)
00:20 Rivets? For the fan? Why?
It was probably cheaper I'd guess, knowing Commodore...
I'd guess to reduce cost and to make for a reliable connection. Not very serviceable but probably they'd rather replace the whole PSU if something went wrong during warranty.
@@JanBeta My A2000 has screws instead of rivets, it's a v4.3 motherboard.
They riveted the fan in? How riveting.
Hmm.. it's saying "Battery backed up clock not found" - did you remove the clock chip ? If not, thats a sign of a problem. The clock should still be found even if the battery is removed.
Oh, I didn't even notice that. You are right. It seems to sometimes not see the clock, on other boot ups it did. I'll have to investigate. Maybe there's a dodgy trace somewhere that I didn't see the first time around.
Wow, that's a quite fan - nice choice. And great drill work - I cheered after it all went well ... and laughed at the meme part. hehe ;)
Glad you liked it. I just had to sneak in the meme thing. ;)
can I use this vid as a reference for my A4000 PSU? Or...?
The A4000 PSU is somewhat different, but the fan stuff should be more or less the same. IIRC, the fan sits on the inner side of the PSU and sucks air from the computer case into the PSU instead of blowing air out of the PSU through the back. Are you saying that your original A4000 PSU is still alive? Mine died already in the 90s, and I had to find a smallish AT PSU and transplant its guts into the PSU enclosure of my A4000.
You can say this video was a big fan service.
I... see what you did there! :D
Really nice channel,Subbed :)
Gut zu wissen, das ein Standart 80er passt. Mich nervt das Gebläse in meinem A2k so richtig! 😁
Hm, ich sollte mir in Zukunft die Mühe machen in Englisch zu kommentieren 😔
I would say you should NEVER put a power supply without the -5 volt as it's usually used for OP-amps and they usually go boom if they are missing the -5 volt, potentially destroying the zorro cards.
Yes, I definitely agree. If you are not absolutely sure nothing in your machine needs the -5V, you risk damaging stuff. I think the usually applied workaround would be to use an 7905 voltage regulator to supply the -5V if the psu doesn't support that voltage.
I promise to not make jokes about @thejanbeta using a drill anymore.
I prefer doing a "A Western Union Splice" when joining wire together.
"battery backed up clock not found" at 14:07
Yes, in the meantime I have a coin cell in it and the clock works fine. I think I had to reset the chip to make it start, too.
Hey, that old fan lasted way longer then the engineers ever intended so I guess the rivets aren't the worst thing ever, just annoying lol.
I know exactly how I sound and I understand exactly how annoying I am but did you check the small value capacitors? :P They're kinda prone to dying with age no matter how good they were.
Great video as always :)
Especially the bootstrap capacitor in any smps. :)
I will definitely replace them asap, I just didn't have the correct values in stock in time for the video.
@@JanBeta Looking forward to the recapping video. :)
Spend the extra time and change out the caps and redo the heat sink material
couldn't you drain the system to be safe that the caps are empty?
12:16 i got theese screw drivers aswell :) Wera, quality product :)
Yes! Really happy I took the plunge and bought some decent screwdrivers. I only used the cheapest stuff before and it really makes a huge difference to work with these Wera ones now.
Noctua? I am sure you love your Amiga but seriously THAT MUCH? (who am I fooling here haha)
Well... :D
The color match is almost perfect.
$15 is pretty cheap for a decent fan TBH
Noctua are good quality, a tad overkill, for just a power supply.
But why would the fan requirements of a PSU be any lower than those of any other application? I mean, in virtually any scenario that involves a fan you would want sufficient airflow and pressure, low noise and vibration, and high endurance and reliability. Am I right? Also, in all the desktop Amigas that I'm aware of, the single PSU fan provides the forced airflow to the whole system. These machines are becoming rare and precious, so I for one would definitely not skimp on the fan.
3:52 But you're famous now. ;) I agree, that is oddly confident riveting a fan on. O_o???
Einige A2000 Netzteile prüfen die Stromaufnahme des Lüfters. Ist die beim Start nicht hoch genug startet das NT nicht.
Oh, das wusste ich nicht. Das ist mal ein schlaues Konzept. Scheint ja in diesem Fall (falls das NT diese Prüfung macht) glücklicherweise genug Strom zu sein trotz modernem Lüfter.
The key to a thrilling electronics repair video is to use the word “should” multiple times. Check. :)
I guess I should be more careful with repeating certain words... ;)
@@JanBeta ...but please keep saying "back in the day" and "fingers crossed nothing explodes", i like that :D
Nice work :-)
A smaller drill bit would of been lot easy for you with the rivets
You mean I could have drilled all the way through the rivet? I was a bit cautious because I didn't want to damage anything so I intentionally went with a size that didn't fit through the holes on the fan grill.
@@JanBeta You don't need to drill through them. It can help to drill into the rivet at an angle and rotate the the drill around (in a cone shape) to prevent drill bit biting into the rivet and causing the rivet to spin in place.
Good work! Funny thing, I used exactly the same model of fan in my A2000-PSU about half a year ago.
Good choice! I think I got the idea for this particular one from an old forum post somewhere. I used quite some Noctua fans before (in my modern PC, too) and I think they are worth investing in. ;)
It's usually the case that the line capacitors will be discharged, as there is either a bleed resistor, or the PSU runs until the energy in the line capacitors is drained. The main time to take precautions and discharge the caps is when you know the power supply has been energised recently, and there was no output. I've nearly come a gutser on this working on a TV power supply - the main MOSFET had failed, and there was nothing to discharge the cap. Fortunately I remembered before I stuck my fingers near it!
I'd certainly recommend you replace the secondary side capacitors soon to keep it working well. The line side caps should be fine. Oh, and check for stinky RIFA capacitors too !
Ah, and again I'm learning something from you. :) I guess it doesn't hurt to be over cautious anyway, but good to know that they usually are drained. I'll replace the caps asap, just have to order some because I didn't have the right values in stock.
Luckily, there's no RIFA bomb to be seen in this one. I learned about those the hard way a couple of years ago when an old amplifier I was working on went up in smoke. The smell! :P
While watching this video, my Amiga 2000 Power supply suddenly exploded and a lot of smoke rise up. No idea what caused that. Perhaps the fact that he wasn't in use for 15-20 years. I turned him on less than 10 minutes ago.
Please, once you're sure it works, best proceed to replace the capacitors. If they're 1988 you're taking serious chances of them going leaky or making damage to the computer.
Plot twist: the fan is made of chocolate!
It makes the whole lab smell like cocoa!
Apart for replacing caps, dont forget to replace the thermal paste on those fets. It'd be amaizing if before replacing the caps, you could measure the ripple voltage and voltage rails before and after the refurbish
Is there a chance that we will see part 2 of the NAD 3020 repair? I'd be really interested in it. And... Noctua fan.. Everything worth doing is worth overdoing? *lol* I like it *tumbs up*
Ehrlich gesagt, ich habe nicht erwartet, dass der Bohrer sagte: "Sie wissen, wie spät es ist", aber wenn es funktioniert, bohren Sie es.
I don't know why but power supplies have always scared me. I guess electric shock death is enough of a deterrent.
You could install a noisekiller (temperature regulated resistor) on the fan. It will increase the resistance when temperature is low, and reduce the resistance when temperature is high. But since you installed a low rpm fan, its probably no point.
Premium packaging.....Standard fan
Noctua fans are nice enough, but they could definitely dial the presentation down a few notches. I don't want to pay for a gift box when all I want is a fan.
Why didn’t you replace the cap’s?
I simply didn't have the right values in stock. I'm definitely going to do it asap, especially the smaller value caps.
Touching a capacitor with a finger hurts but it will not kill you. To kill you it would need to discharge through your chest. I.e. the current would have to travel from one arm to the other.
It might be a bit exaggerated that I mention it in the videos every time but I don't want anybody to get hurt if they follow what I do. Plus, if you have a weak heart or other issues chances are (albeit they are small) that they might actually do major harm to you,
...so you're saying I should change the way I discharge capacitors? I usually use my tongue and one of my pinky toes to complete the circuit.
I have done this by accident, touched the charging cap soldering points when i was moving it out of the way. Good thing the main power was disconnected. It was quite a shock, but i didnt die, and i didnt get "locked" to it.
❤️
I was enjoying the video until... 8:49 NOOOOOOOOOOOO!!!!!!! LOL!
AND, you clipped it RIGHT at the connector without leaving any wire on the connector so that connector is now unusable. UGH. LOL!
But all kidding aside, I personally would have probably kept the stock fan connector intact and added a corresponding connector on the power supply fan wires to mate up with it. Great mod though and looks great!
Same fan I got for my A2000 power supply! So quiet.
I can´t believe you replaced the fan and you din´t recaped the unit, so much for future proffing :-/
As I said in the video, I’m going to do that ASAP. Just didn’t have all the caps at hand.
A video on replacing the fan? I think, “ how hard can that be?” ... RIveTS¿
Cant you just run wires from +5 volts, flip the cables and put -5 volts where you need it?
there is not much risk, a failing switchingpower suppy never puts out over voltage.
That's right, they usually don't, I still want to do some maintenance on it and replace the caps to make sure it doesn't pop at some point.
They can still put out enough ripple to stress out the motherboard capacitors and cause all sorts of weirdness.