As a sound engineer in the 80's I was taught to solder and work on our equipment by my friend who has since passed away. He taught me the trick of using nail polish to cover solder joints when building audio cables. I still have that same bottle... it was not clear though, it is a bright fire engine red! That bottle is getting low but amazingly still works and I use it now and then when building or repairing mechanical keyboards. Thank you for another great video. Really enjoy watching your channel.
Back in about 1982, being an electronics/computer geek, I had purchased an Apple II+ clone motherboard kit from a guy selling them locally. It came with a blank motherboard and all the components, so you had to solder all the IC sockets and other components. I loved the challenge and ended up with an Apple II+ clone at a fraction of the cost of a real Apple (which was about $2000 back then). There were a flood of apple and IBM clone parts stores that popped up in the early and mid 80s to help people build those clones much cheaper. When I watch these videos, it brings back so many memories of those early 80s days... the fascination and excitement along with it. I truly get endorphins in my blood seeing you work on these old systems where were the ancestors of today's PCs. Thank you!
4.20 am here in NZ, just finished a bad day at work and Adrian pops up, a great "life is good" moment Keep up the good content, you are certainly worldwide!
"Gee, where should we put the battery full of acid?" "Right next to the CPU, of course." "Brilliant, you are promoted!" Seriously, the A2000 is the king of aggravating repair work- acid does crazy things old boards sometimes. I will definitely swipe that naval jelly tip though, I'd never considered using that on a slot like that- brilliant thinking as always sir. Rock on!
To be fair to the commodore engineers, they never did "planned obsolescence", they were always trying to make the best most advanced machine they could. But from an engineering tolernace point of view they did only design these machines to last 5 years tops, by which point the machine would have many successors so designing for a longer tolernace lifespan would increase the cost at no benefit to the end users. So batteries left inside the computers for 30 years were always going to leak. I bet many of those batteries stayed good for a lot longer than 5 years, and the fact that many of the chips still work after 30 years is nothng short of a miracle. There is a good talk in youtube from Bil Herd about vintage computers and aging where he explains all this stuff, and mentions how they never ever did planned obsolecence at commodore.
Hm how about placing the battery next to a custom chip we're gonna stop producing in a year so by the time the battery leaks there is no chance on earth to get a replacement for the battery-damaged chip?
Great job Adrian - enjoyed that again =D I have to admit to suspecting the 245's related to Zorro as soon as you removed the buster. It seems to be a fairly common when there's been leakage. The green screen was a chip RAM fault, but a red herring caused by that faulty 245. It's interesting that KS1.3 didn't behave the same way though!
I am not surprised you knew the symptoms! You've fixed so many of these boards before. :-) Was my first ECS Amiga repair -- only have worked on that Amiga 4000 previously. Isn't it odd had only 2.0 could see that faulty chip with buster removed. I can't quite explain that. Do those others chips also die or is that one chip specifically?
Definitely learned a bit from this myself even after all the systems I've fixed. Not sure I'd have made that connection myself. But I guess we're always learning haha.
@@adriansdigitalbasement =D I have so much nostalgia for the A2000 - lovely machines, in some ways I prefer them to the A4000. Either of those 245s can die - it may also have nothing to do with the battery leakage and more to do with someone removing a card whilst powered on, or a bad connection whilst powered on. My friend did that accidentally to his A2000 back in the day - and one of those 245's failed on his. Another interesting thing was seeing how regular they are switched (when you scoped the OE). In some cases it probably failed and then just got put into storage, whereby the battery leaked. It will be interesting to see how you get on with solder mask paint - I've found it to be no better than nail polish tbh (actually I prefer nail polish). Has to be set with UV and the stuff I used kind of goes mat in appearance and doesn't set that well. Keep up the great work, your channel is fast becoming one of my fav tech channels. You often show things I totally skirt past, so its a bit of an eye opener and reminder I should be explaining things a bit more.
@@GadgetUK164 thanks for the feedback! I really appreciate it. And interesting on the PCB paint. Yeah I've always just used the clear nail polish lacquer and never had a single issue... So I'll be curious on the UV curing paint. I suppose it's a bit more resistant to coming off than the polish on the long run. And fascinating about the 245s right? Yeah was shocked how much buster is switching them, even with zero cards installed. I will certainly always suspect them from now on I've seen some of your videos where you had the RAM 245s on the 4000s die too. Wonder what's up with those chips LOL
@@adriansdigitalbasement I am *not* a Commodore expert, but seeing you guys talking about this twigged a memory about another video I'd watched some time ago. It was the 8-Bit Guy's Commodore 128 history video. Bil Herd was a guest, and he talked about how the VDC (80-column chip) on the C128 didn't have an interrupt, so the computer had to keep checking a register to see if the VDC was done with its current assignment. I wonder if the same issue arose when trying to integrate the Buster chip with the 245s. That is, Commodore might've had a problem getting the 245s to communicate "hey, we're doing something" or "hey, we need something" so the Buster is just ALWAYS checking them.
The way you’re able to backtrack the signals from the chips to find the exact broken chip is absolutely astounding to me, being a computer engineering student who studied electronics at a tech high school. It’s so educating to me!
Those RGB lines normally in the overscan are the AKB (Auto Kine Bias) During vertical retrace the monitor turns on each gun and monitors the cathode current. By doing this it can compensate for CRT warmup/wear and maintain proper white balance. You'll see this on just about every Sony PVM/BVM but some other monitors do it too.
What still amazes me is your enormous patience. Well, the same people would say when I am programming, but you are dealing with designs you didn't made.
Nice job fixing this huge B2000 ('B' stands for Beast) mainboard Adrian 👍 Such great machines! Quite easy to work on as well. Mine also had battery damage but it was only an eaten HALT-trace and some corroded sockets and pins that kept it from booting. Pretty similar. I fixed it by cleaning the sockets and pins and simply adding a bodge-wire. I'm sure this one will keep running forever. Mine did 👌
I miss my Amiga 500, sigh. Though the motherboards were different it brought back memories of upgrading my good old Amiga. I added/swapped out the Agnes for the fatter Agnes, added extended memory and a hard drive. I always wanted a 2000 and drooled over the Video Toaster when it came out, scanning my monthly Amiga World for the latest upgrades, applications and games. Thanks for the memories.
I used have to have an Amiga 2000 with a hard drive and the 68030 card as well. One of my best computers I ever had. Thanks for the great trip down memory lane. The multitasking ability of the Amiga was ground breaking. :-)
I almost expect a Dr. Phill ep where the daughter is accusing her geek dad of stealing her nailpolish to fix pcb's sometime in the future as an episode.
You're better off not, though. A lot of the stuff added to make nail polish pretty is metallic. Stick with the lacquer-only formula on electronics so you don't have to worry about causing a short.
Same battery issue with my A500+. Brought it up from the basement one day and saw the carnage. Although there were actually no destroyed traces, nor components. Only the silkscreen around the battery. Removed it and cleaned the board thoroughly. Works very well. :)
It's always tricky to track down a logic chip problem, so this is a good catch. A lot of people, when looking into repairing a board, will overlook the logic chips and run themselves in circles.
Your enthusiasm is infectious backed up with a "have a go" approach and deep knowledge. Fascinating stuff, Adrian, even though I only follow 20% of what you say. Keep the content flowing.
Adrian, you simply amaze me. I never imagined that anything, most especially a computer could function with IC chips removed entirely! Your troubleshooting methods are awesome and make me wish I still had some of my vintage stuff so I could play along. Keep the great videos coming.
Popcorn yes. It could be a knockout chocolate brownie time as well. Adrian never fails to guide us through the tiny storms here in the workshop. And a rather brilliant pop by the shop time it was.
This is making me want to get an Amiga. I've never had the chance to have one as a kid, as I was like 3 or 4 years old 😅 But yeah. I'm going to try my hand at repairing one. You Sir, inspire me.
Wow, you've never worked on an Amiga 2000 MB before? Outstanding job! And I'm a computer engineer (by education) and an old time Amiga fanatic. I have three, an A2000/2630 and two A3000s.
This channel is fantastic. I just love the thorough troubleshooting employed, and learned quite a bit. Half makes me wish that I had studied EE versus CS, but hey, the world needs programmers too.
@@adriansdigitalbasement I was a film major. ALL this sort of stuff has to be self-taught (although I also picked up plenty of soldering tips from working in the IBM Z test lab)
I was planning on showing the unboxing of my old IBM PS/2 on my channel. Based upon what you found in every battery-backed board you have shown us, I fear that there will be quarter-sized hole straight through the motherboard. I better hurry and pull that board!
I'm a fan of the clear nail polish on the repairs. I like when consoles are put in clear cases, so I can see the boards, wires and other innards. So the clear finish, to me, is like one of those cases. You can see the fix and what went into fixing it.
So, I know you're hesitant about doing board repair videos if there are others on UA-cam, but you're so incredibly awesome (and a joy to listen to and watch work) that I am sad you won't do a video on putting together that replica Amiga 2000 PCB. You keep teasing about it too!
Man, seeing your videos with the Amiga computers really brings back good memories when I was a child playing on my dad's old Amiga 1000 (it was maybe 10 years old when I started playing with it). It was the first computer I had ever printed in color from too using the Okimate! Nothing important ever, just the doodles I'd make in deluxe paint. I remember playing a couple of games on it whenever I would earn a break from having to play Reader Rabbit on the newer 486 system that sat next to it. I only can remember the name of the one game, The Three Stooges game, since I played that one the most of the few we had. Now I've got the urge to dig it out next time I visit home.
This has really become my new fav channel. I don't have the resources or time to do all these projects you work on so it's really great to watch you do all this stuff.
Nice to see another A2000 up and running again. One of these days I will have to go through this type of process on my own A2000. I did finally clip out the battery but that is as far as I've gone. My A2000 has a CHIP RAM memory expansion board in it. One of the wires has come undone. I will have to see if I can find the docs for the mod in order to determine where the wire goes.
Dude, you've got great explanations always. I find it to be very valuable to be able to firsthand experience your thought process. The stuff you share does not only apply to the device you're fixing and is usually useful more generally and I find that to be awesome. Thnx a lot.
Excellent troubleshooting :) I learned quite a bit about troubleshooting the 68000. The Amiga 2000 was the first Amiga I ever used - in High School with the Video Toaster and the Amilink EDL.
I must say when youtube alerts me that there is a new Adrians Digital Basement video I cant wait to watch it just as if a new Dukes of Hazard episode was about to come on as a kid. Great video. Great topic (my fav: Amiga!). Great channel. One of my favorite channels. Thanks for making videos.
Just like with classic cars, today you have to do your best to minimize the number of total loss junkers. Great job, keeping as many Amigas as possible from being junked due battery corrosion is important today.
@4:20 Here is an idea you could try for the copper fingers of the expansion socket as they will corrode again: In pcb manufacturing after we did the light masking and aciding, we would always put the boards into a water tin solution for a few minutes, so that all of the board was nicely pre tinned before green masking and soldering. You could try and get ahold of that liquid tin solution and carefully drip it onto the contact fingers for copper corrosion protection. The tinned contacts will also corrode and develop a white layer but at a slower rate and only in a rather humid environment.
Interesting. I think if that socket dies, I'll be able to find a new one and desolder the bad one... Perhaps. The battery has done a number on the solder which makes desoldering much more difficult.
@@adriansdigitalbasement : Well desoldering and installing a new socket is always the best option. I just don't know how readily available those socket are so that's where my idea comes from to protect the existing one as good as possible.
Down to auto config. To run the ROM code to auto configure the card, you need a 68000. I'm talking about both the onboard ROM and the ROM on the accelerator card.
well done, as always. i've never owned, or worked on, or even used a commodore or an amiga. i watch cuz i always learn useful skills from you. thank you. take care & stay safe.
What colourful names chips used to have... Nice work, today i found a working lab power supply, maybe tomorrow an Amiga... I´ll keep my eyes open. Stay safe.
There can never be to many Commodore repairs, thumbs up for this one👍🏻 Thanks for this video, as always verry clear. Would you do an Amiga repairathon once?😁
I had to restore my A2000 recently too. I found a machine socket for the 68K. But I also found a replacement socket for the CPU expander! They are still made new. You can find them on Digikey.
Nice repair journey with the A2000! I had 2x donated to me from a local art school back in the 90s but they were ‘puff of smoke’ type fails before I got them and unfortunately the only thing I kept was a single Gary chip... I think I still have it in my parts somewhere haha... oh :/ how I wish I had space to keep those boards from back then- but as a teenager it was havok. Great work :thumbs up:
Hi Adrian, what a sweet repair! I fix mostly new stuff now but sometimes it just doesn’t feel as satisfying as ones like this. it’s Probably as chips are so complex now, ie Xbox one s HDMI retimer failures. If this A2000 were an XBOX you would be pulling the whole graphics accelerator card out and throwing it in the bin, of course you cant replace an individual gate in an IC but that Bus Transceiver, maybe 20 gates or so...comes pretty close. Nice job! Feel free to engage ‘smug mode’ :)
Nicely done! I hadn't considered trying naval jelly, although it makes sense for this use-case... Seems like you got good results, so I'm willing to try it on the next board I'm doing corrosion repairs on.
Great job, keep up the good work! I would urge you to learn what the trigger settings do on your oscilloscope, if you don't already know. It might save you some frustration. I enjoyed watching this. Thank you.
I'm so glad I've changed the barrel battery on my A2000 in time, and got away with a very minor leak (only affecting the battery legs itself, nothing else on the board). This was like a decade ago, just when these leak issues first became really apparent. It is still holding the clock, but maybe it's time for another swap. I think I'll put a CR2032 holder in there the next time. Great repair video, really good trick of pulling the Buster to test without the Zorro slots!
For electrical contacts that are at risk of future corrosion, Etc. I have been using spray di-electric grease with fantastic results. Cheaper and lasts longer than Deox-it.
Nice!!! I just have a heck of a time getting the 68000 back in its socket. Its to the point that I dont want to even mess with removing it until Ive tried absolutely trying everything else to get a non booting 2000 to work.
Your troubleshooting skills is incredible, I'm trying to figure out what is wrong with my amiga500. That is so something that the ls chips would do that.
Make sure you get ALL of that naval jelly off before you apply power. I found out the hard way working on an old Philco tube radio that that stuff is electrically conductive and ended up frying a tube socket!
I love your enthusiasm whenever something starts working.
Every time it happens, it puts a smile on my face.
It even brought water to my eyes a couple of times.
What a great channel.
@@avantesma1 His enthusiasm is impressive, I love it. And when it all works!!! oh yeah, it´s great...
Adrian and my other favorite Mustie1. Such joy after getting something working. Even as simple as making progress.
@@chemmerling Wow, I also watch Mustie1, what a small world.
"It freaking works!!!" is such a nice thing to hear! :D
The number 1 thing I love about Adrian's videos is his highly animated talking hands.
i am not sure if they are always in sync with the audio signyl
Plug them into a scope to check!
As a sound engineer in the 80's I was taught to solder and work on our equipment by my friend who has since passed away. He taught me the trick of using nail polish to cover solder joints when building audio cables. I still have that same bottle... it was not clear though, it is a bright fire engine red! That bottle is getting low but amazingly still works and I use it now and then when building or repairing mechanical keyboards. Thank you for another great video. Really enjoy watching your channel.
It's a great tip
Same.
I’m that’s awesome. I would have never thought of doing that.
You are so incredibly cute when you get excited about something that started working.
Back in about 1982, being an electronics/computer geek, I had purchased an Apple II+ clone motherboard kit from a guy selling them locally. It came with a blank motherboard and all the components, so you had to solder all the IC sockets and other components. I loved the challenge and ended up with an Apple II+ clone at a fraction of the cost of a real Apple (which was about $2000 back then). There were a flood of apple and IBM clone parts stores that popped up in the early and mid 80s to help people build those clones much cheaper. When I watch these videos, it brings back so many memories of those early 80s days... the fascination and excitement along with it. I truly get endorphins in my blood seeing you work on these old systems where were the ancestors of today's PCs. Thank you!
4.20 am here in NZ, just finished a bad day at work and Adrian pops up, a great "life is good" moment
Keep up the good content, you are certainly worldwide!
Hello from your Aussie neighbour!
"Gee, where should we put the battery full of acid?"
"Right next to the CPU, of course."
"Brilliant, you are promoted!"
Seriously, the A2000 is the king of aggravating repair work- acid does crazy things old boards sometimes. I will definitely swipe that naval jelly tip though, I'd never considered using that on a slot like that- brilliant thinking as always sir. Rock on!
It's almost like the placement was a "Well... customers need a reason to upgrade in 10 or so years anyway".
It's called designed obsolescence
Performa alkaline I think... otherwise, vinegar wouldn’t help...
To be fair to the commodore engineers, they never did "planned obsolescence", they were always trying to make the best most advanced machine they could. But from an engineering tolernace point of view they did only design these machines to last 5 years tops, by which point the machine would have many successors so designing for a longer tolernace lifespan would increase the cost at no benefit to the end users. So batteries left inside the computers for 30 years were always going to leak. I bet many of those batteries stayed good for a lot longer than 5 years, and the fact that many of the chips still work after 30 years is nothng short of a miracle. There is a good talk in youtube from Bil Herd about vintage computers and aging where he explains all this stuff, and mentions how they never ever did planned obsolecence at commodore.
Hm how about placing the battery next to a custom chip we're gonna stop producing in a year so by the time the battery leaks there is no chance on earth to get a replacement for the battery-damaged chip?
I suffer from Depression, shame you cant fix that permantely but the videos you make, make my life a little easier thanks!
Instructions unclear. Used the Navel Jelly but my bellybutton is still dirty.
So are my oranges. :-(
@@andrewgwilliam4831 Rubbed it on a battleship, still dirty. :-(
Does it smell like cheese?
You need belly jelly, you got the wrong stuff ;-)
Hunter's Moon - not to be confused with Jelly Bellys.... mmmm....
Great job Adrian - enjoyed that again =D I have to admit to suspecting the 245's related to Zorro as soon as you removed the buster. It seems to be a fairly common when there's been leakage. The green screen was a chip RAM fault, but a red herring caused by that faulty 245. It's interesting that KS1.3 didn't behave the same way though!
I am not surprised you knew the symptoms! You've fixed so many of these boards before. :-) Was my first ECS Amiga repair -- only have worked on that Amiga 4000 previously. Isn't it odd had only 2.0 could see that faulty chip with buster removed. I can't quite explain that.
Do those others chips also die or is that one chip specifically?
Definitely learned a bit from this myself even after all the systems I've fixed. Not sure I'd have made that connection myself. But I guess we're always learning haha.
@@adriansdigitalbasement =D I have so much nostalgia for the A2000 - lovely machines, in some ways I prefer them to the A4000. Either of those 245s can die - it may also have nothing to do with the battery leakage and more to do with someone removing a card whilst powered on, or a bad connection whilst powered on. My friend did that accidentally to his A2000 back in the day - and one of those 245's failed on his. Another interesting thing was seeing how regular they are switched (when you scoped the OE). In some cases it probably failed and then just got put into storage, whereby the battery leaked. It will be interesting to see how you get on with solder mask paint - I've found it to be no better than nail polish tbh (actually I prefer nail polish). Has to be set with UV and the stuff I used kind of goes mat in appearance and doesn't set that well. Keep up the great work, your channel is fast becoming one of my fav tech channels. You often show things I totally skirt past, so its a bit of an eye opener and reminder I should be explaining things a bit more.
@@GadgetUK164 thanks for the feedback! I really appreciate it. And interesting on the PCB paint. Yeah I've always just used the clear nail polish lacquer and never had a single issue... So I'll be curious on the UV curing paint. I suppose it's a bit more resistant to coming off than the polish on the long run.
And fascinating about the 245s right? Yeah was shocked how much buster is switching them, even with zero cards installed. I will certainly always suspect them from now on I've seen some of your videos where you had the RAM 245s on the 4000s die too. Wonder what's up with those chips LOL
@@adriansdigitalbasement I am *not* a Commodore expert, but seeing you guys talking about this twigged a memory about another video I'd watched some time ago. It was the 8-Bit Guy's Commodore 128 history video. Bil Herd was a guest, and he talked about how the VDC (80-column chip) on the C128 didn't have an interrupt, so the computer had to keep checking a register to see if the VDC was done with its current assignment. I wonder if the same issue arose when trying to integrate the Buster chip with the 245s. That is, Commodore might've had a problem getting the 245s to communicate "hey, we're doing something" or "hey, we need something" so the Buster is just ALWAYS checking them.
The way you’re able to backtrack the signals from the chips to find the exact broken chip is absolutely astounding to me, being a computer engineering student who studied electronics at a tech high school. It’s so educating to me!
Saturday evening. It’s raining outside. New video from Adrian. Life is good.
Those RGB lines normally in the overscan are the AKB (Auto Kine Bias)
During vertical retrace the monitor turns on each gun and monitors the cathode current. By doing this it can compensate for CRT warmup/wear and maintain proper white balance. You'll see this on just about every Sony PVM/BVM but some other monitors do it too.
What still amazes me is your enormous patience. Well, the same people would say when I am programming, but you are dealing with designs you didn't made.
Nice job fixing this huge B2000 ('B' stands for Beast) mainboard Adrian 👍 Such great machines! Quite easy to work on as well.
Mine also had battery damage but it was only an eaten HALT-trace and some corroded sockets and pins that kept it from booting. Pretty similar. I fixed it by cleaning the sockets and pins and simply adding a bodge-wire. I'm sure this one will keep running forever. Mine did 👌
Nobody's driving the address bus?! We're gonna crash!
It will only crash if you fall below 80Hz/Hr
@@abeleski By the logic of the movie Speed, doesn't that mean it'd blow up?
@abeleski 🤣🤣
@@TechnicolorMammoth let out the magic smoke you mean 😁
@@abeleski Haha that is true!
I miss my Amiga 500, sigh. Though the motherboards were different it brought back memories of upgrading my good old Amiga. I added/swapped out the Agnes for the fatter Agnes, added extended memory and a hard drive. I always wanted a 2000 and drooled over the Video Toaster when it came out, scanning my monthly Amiga World for the latest upgrades, applications and games. Thanks for the memories.
I used have to have an Amiga 2000 with a hard drive and the 68030 card as well. One of my best computers I ever had. Thanks for the great trip down memory lane. The multitasking ability of the Amiga was ground breaking.
:-)
I could watch you debug anything, all day. So expert, patient and knowledgeable.
Amiga repair?! “Grabs popcorn*
Yea i immediately paused the vid and made myself a coffee.. yummmm
Broken Amiga? Get an Atari!
@@paveljelinek772 i love coffee
I'm not really into retro computing but loved your methodical problem solving approach, using surprisingly effective low-tech methods.
Judging by the assortment of nail polish my daughter has, you'd think you could find a close matching nail polish color to PCB Green...
I almost expect a Dr. Phill ep where the daughter is accusing her geek dad of stealing her nailpolish to fix pcb's sometime in the future as an episode.
You're better off not, though. A lot of the stuff added to make nail polish pretty is metallic. Stick with the lacquer-only formula on electronics so you don't have to worry about causing a short.
There may be other A2000 repair videos out there but few are as informative, engaging, and as satisfying to watch as this one.
Even if this was a typical Amiga repair video from you we would still watch it Adrian! Your work is uniquely satisfying! Keep it up!
Love seeing skilled people trying to fix faults.
Same battery issue with my A500+. Brought it up from the basement one day and saw the carnage. Although there were actually no destroyed traces, nor components. Only the silkscreen around the battery. Removed it and cleaned the board thoroughly. Works very well. :)
I never realized until 32:30 how BIG that motherboard is! Good job on this video!
It's always tricky to track down a logic chip problem, so this is a good catch. A lot of people, when looking into repairing a board, will overlook the logic chips and run themselves in circles.
Your enthusiasm is infectious backed up with a "have a go" approach and deep knowledge. Fascinating stuff, Adrian, even though I only follow 20% of what you say. Keep the content flowing.
Ahh!! The Amiga is close to my heart. I got my Amiga 500 Plus when I was 12 years old and it was the most amazing thing.
Did it survive or was it also killed by a battery leak?
@@adriansdigitalbasement I had sold it way before to fund a Pentium 90 :( But these days I've got lots and lots of Amiga's... to many :P
An another Amiga saved! Congratulation Adrian! 😃👍🙌
Adrian, you simply amaze me. I never imagined that anything, most especially a computer could function with IC chips removed entirely! Your troubleshooting methods are awesome and make me wish I still had some of my vintage stuff so I could play along. Keep the great videos coming.
But, capacitors have what motherboards crave!
Awesome fix and great video.
Nice, your persistence paid off! I was suspecting something shorted under the accelerator slot, without proper ultrasonic cleaning.
Adrian you are awesome! We can see the passion to fix old tec in your eyes.
Good job my friend!
6:00 that's a pretty bodge wire! Nice job.
That debug session was absolutely mindblowingly genius.
So glad you decided to make a video of the repairs. There are always little nuggets to pick up.
Popcorn yes. It could be a knockout chocolate brownie time as well. Adrian never fails to guide us through the tiny storms here in the workshop. And a rather brilliant pop by the shop time it was.
This is making me want to get an Amiga. I've never had the chance to have one as a kid, as I was like 3 or 4 years old 😅
But yeah. I'm going to try my hand at repairing one.
You Sir, inspire me.
Awesome stuff. Thanks for saving such a beautiful piece of hardware. All defective Amiga compiters should be saved like this one.
Wow, you've never worked on an Amiga 2000 MB before? Outstanding job! And I'm a computer engineer (by education) and an old time Amiga fanatic. I have three, an A2000/2630 and two A3000s.
This channel is fantastic. I just love the thorough troubleshooting employed, and learned quite a bit. Half makes me wish that I had studied EE versus CS, but hey, the world needs programmers too.
I was a CS major too -- so this is all self taught. :-)
@@adriansdigitalbasement I was a film major. ALL this sort of stuff has to be self-taught (although I also picked up plenty of soldering tips from working in the IBM Z test lab)
My 2000 had _far_ worse corrosion, but no bad chips. I think I might have had an easier time. Great job debugging.
Thank you SO MUCH for these videos! Absolutely delightful and deeply educational. Your debugging mindset is inspirational and worthy of emulation.
You were totally right! This isn't a never seen video, but the problem turned to be VERY interesting for a video!
I was planning on showing the unboxing of my old IBM PS/2 on my channel. Based upon what you found in every battery-backed board you have shown us, I fear that there will be quarter-sized hole straight through the motherboard. I better hurry and pull that board!
I'm a fan of the clear nail polish on the repairs. I like when consoles are put in clear cases, so I can see the boards, wires and other innards. So the clear finish, to me, is like one of those cases. You can see the fix and what went into fixing it.
I am very impressed with your deduction technics. I am learning a lot from you. Thank you
I used to have one of these when I was a teenager. I used to play Space Hulk all the time loved the manual too lots of cool stuff in there.
So, I know you're hesitant about doing board repair videos if there are others on UA-cam, but you're so incredibly awesome (and a joy to listen to and watch work) that I am sad you won't do a video on putting together that replica Amiga 2000 PCB. You keep teasing about it too!
Adrian you have excellent troubleshooting skills. I am thoroughly impressed. Fred
Love the chip pin out off to the side. When I inevitably use this for reference someday that will be invaluable
Man, seeing your videos with the Amiga computers really brings back good memories when I was a child playing on my dad's old Amiga 1000 (it was maybe 10 years old when I started playing with it). It was the first computer I had ever printed in color from too using the Okimate! Nothing important ever, just the doodles I'd make in deluxe paint. I remember playing a couple of games on it whenever I would earn a break from having to play Reader Rabbit on the newer 486 system that sat next to it. I only can remember the name of the one game, The Three Stooges game, since I played that one the most of the few we had. Now I've got the urge to dig it out next time I visit home.
This has really become my new fav channel. I don't have the resources or time to do all these projects you work on so it's really great to watch you do all this stuff.
Adrian, I’ve been watching your videos for a while now and I’ve gotta tell you, you’ve really come a LONG way! Expertly done!
Nice to see another A2000 up and running again. One of these days I will have to go through this type of process on my own A2000. I did finally clip out the battery but that is as far as I've gone. My A2000 has a CHIP RAM memory expansion board in it. One of the wires has come undone. I will have to see if I can find the docs for the mod in order to determine where the wire goes.
I can't get enough of A2000 Repairs as i own one myself and its my collection pride... great vid...
I don't remember subscribing to you but I am so glad I did! Awesome video, I absolutely love this style of vid.
I'm always impressed with your diagnostic skills. Very nice!
Your troubleshooting skills are impressive!
Dude, you've got great explanations always. I find it to be very valuable to be able to firsthand experience your thought process. The stuff you share does not only apply to the device you're fixing and is usually useful more generally and I find that to be awesome. Thnx a lot.
Excellent troubleshooting :) I learned quite a bit about troubleshooting the 68000. The Amiga 2000 was the first Amiga I ever used - in High School with the Video Toaster and the Amilink EDL.
Adrian, you are some kind of Retro Necromancer bringing these boards back to life =)
Just started watching, instant like for the shirt!
Was thinking quite the same. Been on the ride 2016, 18+19 ;) (+ had that Amiga board including the 2630)
I really enjoyed this video, especially the methodical approach you took to fixing it.
I must say when youtube alerts me that there is a new Adrians Digital Basement video I cant wait to watch it just as if a new Dukes of Hazard episode was about to come on as a kid. Great video. Great topic (my fav: Amiga!). Great channel. One of my favorite channels. Thanks for making videos.
Just like with classic cars, today you have to do your best to minimize the number of total loss junkers. Great job, keeping as many Amigas as possible from being junked due battery corrosion is important today.
@4:20 Here is an idea you could try for the copper fingers of the expansion socket as they will corrode again: In pcb manufacturing after we did the light masking and aciding, we would always put the boards into a water tin solution for a few minutes, so that all of the board was nicely pre tinned before green masking and soldering. You could try and get ahold of that liquid tin solution and carefully drip it onto the contact fingers for copper corrosion protection. The tinned contacts will also corrode and develop a white layer but at a slower rate and only in a rather humid environment.
Interesting. I think if that socket dies, I'll be able to find a new one and desolder the bad one... Perhaps. The battery has done a number on the solder which makes desoldering much more difficult.
@@adriansdigitalbasement : Well desoldering and installing a new socket is always the best option. I just don't know how readily available those socket are so that's where my idea comes from to protect the existing one as good as possible.
adrians vids are one of the most useful in the net..
Good to see that Amigas are still getting some love.
This vídeo is for sure not a leakage like that batery was! Love your vids
Down to auto config. To run the ROM code to auto configure the card, you need a 68000. I'm talking about both the onboard ROM and the ROM on the accelerator card.
well done, as always. i've never owned, or worked on, or even used a commodore or an amiga. i watch cuz i always learn useful skills from you. thank you. take care & stay safe.
What I've learned from your videos over the years: LS24X bus transceivers are the devil!
Great job Adrian, enjoyed the problem-solving. 👍 Brings me back to my successful A2000 repair viddy back in March.
What colourful names chips used to have... Nice work, today i found a working lab power supply, maybe tomorrow an Amiga... I´ll keep my eyes open. Stay safe.
Brilliant detective work leading to a fix!
There can never be to many Commodore repairs, thumbs up for this one👍🏻 Thanks for this video, as always verry clear. Would you do an Amiga repairathon once?😁
I had to restore my A2000 recently too. I found a machine socket for the 68K. But I also found a replacement socket for the CPU expander! They are still made new. You can find them on Digikey.
13:40 - instead of bending the CPU leg, put a second socket into the board and bend the leg on that.
Yes, that is always the better option.
There's nothing worse than when a leg breaks flush with the chip package.
Nice repair journey with the A2000! I had 2x donated to me from a local art school back in the 90s but they were ‘puff of smoke’ type fails before I got them and unfortunately the only thing I kept was a single Gary chip... I think I still have it in my parts somewhere haha... oh :/ how I wish I had space to keep those boards from back then- but as a teenager it was havok. Great work :thumbs up:
Another Amiga repair! Nice job Adrian
I know I am late to this, but I love these educational videos! And if I ever get a faulty Amiga, I might actually be able to fix it
Love your videos Adrian. Wish they were a little longer. 😀
Hi Adrian, what a sweet repair! I fix mostly new stuff now but sometimes it just doesn’t feel as satisfying as ones like this.
it’s Probably as chips are so complex now, ie Xbox one s HDMI retimer failures. If this A2000 were an XBOX you would be pulling the whole graphics accelerator card out and throwing it in the bin, of course you cant replace an individual gate in an IC but that Bus Transceiver, maybe 20 gates or so...comes pretty close. Nice job! Feel free to engage ‘smug mode’ :)
Good stuff. Amigas are so awesome to work on. Everything is so well thought out on the boards.
It's so beautiful watching you reparing those lost cases.
“You have failed me for the last time, chip!” - Darth Engineer.
Thanks for the video Adrian! I look forward to them every Wednesday and Saturday.
Nicely done!
I hadn't considered trying naval jelly, although it makes sense for this use-case... Seems like you got good results, so I'm willing to try it on the next board I'm doing corrosion repairs on.
The naval jelly is a good idea. According to the data sheet, the active ingredient is phosphoric acid which will not dissolve copper.
Coca cola
Great job, keep up the good work!
I would urge you to learn what the trigger settings do on your oscilloscope, if you don't already know. It might save you some frustration.
I enjoyed watching this. Thank you.
I'm so glad I've changed the barrel battery on my A2000 in time, and got away with a very minor leak (only affecting the battery legs itself, nothing else on the board). This was like a decade ago, just when these leak issues first became really apparent. It is still holding the clock, but maybe it's time for another swap. I think I'll put a CR2032 holder in there the next time. Great repair video, really good trick of pulling the Buster to test without the Zorro slots!
For electrical contacts that are at risk of future corrosion, Etc. I have been using spray di-electric grease with fantastic results. Cheaper and lasts longer than Deox-it.
Nice!!! I just have a heck of a time getting the 68000 back in its socket. Its to the point that I dont want to even mess with removing it until Ive tried absolutely trying everything else to get a non booting 2000 to work.
Your troubleshooting skills is incredible, I'm trying to figure out what is wrong with my amiga500.
That is so something that the ls chips would do that.
Amazing knowledge you've got about all of this vintage stuff. I always get amazed.
Even if there is plenty of videos, we always appreciate new ones :) we may learn something new.
Make sure you get ALL of that naval jelly off before you apply power. I found out the hard way working on an old Philco tube radio that that stuff is electrically conductive and ended up frying a tube socket!