10.0.0.0 Subnets -Check ;) Joke aside, what you will do with the Raspberry Pi what we can see from the video? In the last video there were lots of HDDs shown for a second. Did you already built a RAID array with them to store video?
Congrats but quick unrelated question is the arse about face way the Yanks Write the date come from Germany then or are you just accommodating their crazyness?
Salvaging electrolytic capacitors is asking for trouble. The only ones worth salvaging are the mains 400V 185C rated caps which are less than 2 years old. The other elkos should go to the trash, or do not even spend the time to desolder them...
The output transistors opposite the bulging capacitor should be short circuit. You don't have to remove the transistors when testing, but only remove them if they are faulty. You can use a simple diode test via your multi meter to test the emitter/ base and collector/base gate voltage drop. The capacitor blew because the transistors shorted, same as the burnt resistors. The amplifier must have been sitting around for several years for the corrosion from the capacitor spillage to be that advanced. Short circuit usually happens when owner is fiddling around with speaker wires when amplifier is powered on. Rarely does over driving the amplifier cause the transistors to blow. Dry joints from excessive heat can be another factor for the outputs to go into thermal runaway and blow out.
I got one of these receivers in working condition from my in-laws. I don't blame you for scrapping it, but it sounds very good being used as a 2-channel or 2.1 unit as well. I sold mine because it had only analog inputs and all my TVs are digital only (and I have a Technics stereo receiver already that sits in my shop).
I'd love to see you do more audio equipment repairs or tear downs, as this is something I've always wanted to try, but I am a bit daunted by all the complexity.
Yamaha made some really good receivers. I remember the Yamaha RX-V2090 5 channel receiver with dolby pro Logic in 1993. This was Yahama's top of the line receiver back then. It was so built and sounded good while watching a movie using Canton Ergo 90 speakers
My co-curricular classes at school teaches students about robotics and electronics. Another class had a wide-format printer break and donated it to us. in less than an hour, we had the thing cut open and divided amongst other students to de-solder the components to be sorted into boxes. Later that afternoon, the teacher who donated the printer asked if they were going to fix it. "no." he said with a smile on his face. \ the printer was worth more in parts than it cost to replace...The students had a fun afternoon beating eachother with cat-of-9-tails fashtioned out of gears the wiring from the printer...
I have the slightly lower end than that model it uses the exact same power supply configuration transformer and amp stages. That is not due to useing a low impendance speaker nor has it anything to do with the rail voltage selector. That is liquid damage.
I was enjoying watching your video. Good job. I bought yesterday RX-V596RDS and noticed that volume knob is loose and has play up-down. After cover disassembly it turned out that solution is simpler. Just removed volume knob and used socket key 11 mm to screw the nut from motor shaft. Job done😅
I have a Yamaha RX-595 and a intermittent mode selector with remote control capability. Your video was very good but it did not concentrate on the selectors. Can the contacts be cleaned while installed such as with a contact cleaner? It has a metal housing with some holes that surrounds the selector and gear connection for the remote control motor that is mounted 90 degrees to the selector shaft.
Hallo, ich schreibe mal auf Deutsch, da ich einen entsprechenden Akzent in Deiner Englischausführungn heraushöre - ich hoffe, ich liege da richtig. Ich habe den Yamaha dsp a595a auch und wollte gern meine Boxen mit Bananensteckern anschließen, stellte aber fest, dass die Speaker-Schrauben keine Kappen haben, die man abnehmen kann, um den Banana-Eingang freizulegen. Was kann man tun ? LG
Have you visited Oslo? The intro showed a single ticket from one of Oslo Sporveier's vending mashines! I'm curious at the circuit you used to monitor the signal from it.
I have this unit and still works good. My issue is the power/standby button came off. Can you tell me does this somehow glue to the power switch inside the unit or does it somehow mount to the face plate. Seems like it snaps into the face plate but when i push on it, it just pops out.
yamaha RXV1500 AV receiver,the fuses are 3A,mounted on 3 vertical circuit boards,they are sealed inside small brown plastic boxes,how do I remove them to look at the fuse filaments?
It looks a lot like someone/something spilled some liquid in it, given how there such a large area affected. The capacitor also seems too small to contain such an amount of electrolyte.
there are a very nice works. I discover your channel 3 days ago, and since now i see some of yours video tutorials. i want to ask you were to find the transistor probe you'll used in this video (see it at 09:00) if you can, give me a link please. thank for all and escuse me for my poor english. (i'm from italy ) Zola
So those little black pieces are the amplifiers?? Damn those are small. And they put out how much power? Anyways are those “mosfet” style? And is that considered, class a/b, d...etc?
Hi ! I have question ! I buy transformer from Yamaha RX-V1500 . But are not what it’s the primary and secondary and how much watts ? One Sade it’s 8 wires and the other side it’s 8 wires but minor caliber ?
Nice video. I have one receiver YAMAHA RX-V430 and it was in the box storaged for a long time and one day I decided to power it on but it was completely dead no power at all. I checked the fuses and the power in the power supply = 13,3 DC OUT PUT. The capacitor on the power supply is normal there is no blurber. What would you suggest for me to do?
Hi i have yamaha rxv420 and The same problem. Torn on but after 2 second turn Off. Show display status p5 prt 210 B. All pcb look nice. Maybe you have idea thats problem that check i should?
My Yamaha Receiver RX2065 seems to have a problem, when i select USB Mode, the USB stick light flickers, then the display say's click free, and the remote doesn't connect. I Need Help , Any ideas please. Karl Tasmania Australia .
no joke i scavenged the exact same model last year and used it make a coffee table with speakers in the side which ive named SUB³. interesting tear down, im loving the videos lately :)
May i ask you something about this receiver..? is this receiver had backup batere (like c-mos batere in Computer). in ask this because every time i did setting for my receiver like Speaker (small or big), Speaker Volume (Centre, & Surround), then i'm unplug the ac cable power. when i plug in ac cable again.. all seeting that I already set, back again to Factory Setting. do i have to keep ac cable always plug in to keep this setting...?
I am not very technical, so bear with me. I have the same receiver as in the video. It still works... except the display. Do you know of a fix? I would love to keep using it. It would just be a better experience with a working display. Thank you for any tips!
It is a bit late now. But you might be lucky, that the display is actually alright. Just the light bulb of the background lighting might have died, so your display can't be read...
Haha! I had one of those when they were brand new.... Not CRAZY Expensive, but pretty expensive.... Sounded very very good. Too late now, but I would have suggested you repair it.... I have a newer one downstairs, too, that isn't working.... Yamaha RXV, I forget the number.... Volume control quit working.... Your videos are inspiring me to take a look at it....
Hey man. I have an older Yamaha A/V 5.1ch receiver that I would like to use in just STEREO mode and disconnect the on board amplifiers and bypass them to an external 2ch pro audio amp.. I dont have preamp outputs. Just rec out. Do you think there is a point in my receiver where I can desolder the on board amp/s and solder in some RCA connectors to go to my external amp? I am sorry for this confusing question but I have looked and looked and havent found anything like what I mentioned. This vid was the closest and I figured you could tell me if its even worth trying? Thanks.
Niko Bellic thank you for the reply. I will look into that converter thing. I went on ebay and found an older home receiver with preamp out for 40 bucks. . I just don't have video switching now. Oh well, it's LOUWD. I purchased a Behringer km1700 amp. Rated at 1700 watts peak but when I do the math, it's actually a little above 500 watts rms per chanel into 4ohms. I am happy but it would be nice to have video switching back. Thanks
Great video, its crazy that even in todays Yamaha's AV receivers that they still don't add a good cooling system (especially with the price tag Yamaha asks for these systems, knowing they have overheating issues) Ive lost count at how many youtube repair videos are out there where the problem is always heat destroying the caps, or other component's on these AV receiver's
I've heard them called "sil pads" (I think it's a trade name) because they are made of silicone rubber. Older tech used mica wafers which were brittle.
We call them thermal pads these days in the PC scene you used them for MOSFETS on graphics cards which need active cooling from your heatsink or waterblock
OMG, two days ago I had the SAME maintenance on my RX-V995, it was starting and then turning off immediately exactly like yours, I just gave up disassembling the boards, and cleaned it with a long brush, patience, much sneezing by the powder, and them washing it with Hexane, the unit is running like new. I wish I had a look on this video before my adventure lol.
i have the same unit that is working fine only problem is if the power goes off from the electric company i have to preset the stations again- can you or anybody show me where is the backup memory battery location is
Thanks for the video, I have a similar Yamaha amp, however, mine shuts down after a few seconds, it seems like its a overload circuit that is confused, have you experienced this before. I also have a technics amp that is doing the same.
Hey, thanks for your video, I was actually having some issues with my Marantz SR-5011 receiver (it shuts down by itself after being on for many hours and enters an error mode with the power led blinking) and was searching for some similar experiences. I started to watch and then just got curious. At some point you mentioned the possible explanation for the Yamaha failure as having to do with some incorrect impedance used and then I remembered that I had set mine to 6 ohms with the previous speakers and my new speakers were 8 ohms. I am curious if it solves the problem. Thanks again!
Mine is fried ! Between cat pee & lightning & it being 20 years old & trying to adapt it to new tech . I am joking about the cat pee , but , it can be a real corrosive problem. My Yamaha R-70 from 1982 was of higher quality than the later more recent RX series , what a surprise. "They don't make them like they use to"
Hello, I have a problem with memory backup at my Yamaha RX-V520RDS, so maybe someone could help me solve this. Even short, power loss receiver loses memorized radio stations. In manual there is the statement: "Memory back-up The memory back-up circuit prevents the stored data from being lost when this unit is set in the standby mode. If, however, the power cord is disconnected from the AC power outlet or the power is cut for more than one week, the memory will be erased." As it is stated if the receiver is without power for more than one week, memory is erased, but in my case, it is erased instantly even if it is unplugged for 1sec. In the service manual, I tried to find something about back-up circuit , how it stores data or does it have some kind of battery but could not find anything. Do you have an idea what could be wrong with memory backup? Should there be some kind of battery or some larger capacitor which provides power for memory backup? This is the only issue I have with this receiver, everything else works flawlessly. Thank you.
Please, make a video with the vacuum fluorescent display run on arduino (or something similar)! I've been trying to do that, but didn't know where to find a good multiplexer, that can handle that voltage.
I have used some 74HC595 shift registers with 3904 & 3906 transistors on each output to drive multiplexed VFDs. The transistors drive the VFD pin high, and resistors pull the pin low. Newer VFDs are fairly low voltage, most of mine run on +10v & -20V.
My theory is the capacitor blowing may have been unrelated or happened after the actual damage. To me it looks like someone spilled some liquid in the top. Since these have an open grill to vent the heat, it would be very easy to do accidentally.
I really need help my receiver recently Started dropping all volume as soon as bass notes hit I don't know what it could be any suggestions would be helpful but I feel like it might be the output capacitors
I had the exact same problem. I thought I would have to get it repaired. Turns out, my Samsung tv was blinking on and off and when a friend came over to help me disconnect coax cables, one was no good and once we removed it, the tv was fine and I just jumped out of bed to test the receiver and it works at high volume! Check all your wiring in your stereo system
I recently have bought exactly the same receiver for my friend, but perfectly working, except one minor issue. I found it very nice sounding and musical in my stereo setup, so good that decided to keep it and by another for that friend! I think you should not dismiss amplifiers just because they have more channels than you need... ;) By the way, is CD player ok? I would really like having a matching one to my receiver, but did not find any for sale in europe. I guess postage would not be completely insane... Thanks for your great videos! And if you still reading, would you by any chance sell me that big motorized potentiometer? Mine is a bit noisy...
Can it play in dual stereo mode? I want to connect 2 bass speakers on main speakers (with crossover for low band) and another 2 speakers on other 2 channels (as a satelitte speakers wit crossovers for middle and high frequencies) I am not interest in any other combinations, so it's fine to me even I must make some changes in internal input connections. My wish is to make quasi bi amp (passive) from this receiver.
I wish i had your knowledge. . . I have 5 amps that have all broken over the years but I dont know any one who would be able to repair them. . 3 are from self powered speakers which are all pro grade stuff and cost me a lot of money to purchase. I would just turn them into passive speakers but to do that I would have to build customr crossovers, which i plan on doing just have had the time or money lately . . . . it kinda of sucks. . . . :( I wish there were people like you inthis world. . . lol
I use a quite not very expensive Technics 1987 rack stereoset in the garage. Thing is the garage is most of the year humit, very. In winter it freezes, in a heatwave the clear plastic roof makes it like venus. This extreme condotions have not hurt the Technics, there is not a spot of corrosion inside. Either this expensive Yamaha houses ultra low grade components or is been subjected to abuse far beyond what I do to the Technics.
This is what we use to class as a non-economical repair in the trade decades ago. Not worth the bother unless the customer was so very desperate for that item to be fixed and willing to pay for the time, parts and labour. Yes! it is a real pain to repair stuff like this and even more so on today's SMD stuff.
someone overpowered that amp or spilled liquid in it. usually overpowering is caught and the protection circuit is tripped turning it off and protecting speakers and the amp
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Joke aside, what you will do with the Raspberry Pi what we can see from the video?
In the last video there were lots of HDDs shown for a second. Did you already built a RAID array with them to store video?
Congrats but quick unrelated question is the arse about face way the Yanks Write the date come from Germany then or are you just accommodating their crazyness?
Salvaging electrolytic capacitors is asking for trouble. The only ones worth salvaging are the mains 400V 185C rated caps which are less than 2 years old. The other elkos should go to the trash, or do not even spend the time to desolder them...
I love old Hi Fi equipment, it is always so well put together! Looking forward to seeing what you have coming up soon :)
The output transistors opposite the bulging capacitor should be short circuit. You don't have to remove the transistors when testing, but only remove them if they are faulty. You can use a simple diode test via your multi meter to test the emitter/ base and collector/base gate voltage drop. The capacitor blew because the transistors shorted, same as the burnt resistors. The amplifier must have been sitting around for several years for the corrosion from the capacitor spillage to be that advanced. Short circuit usually happens when owner is fiddling around with speaker wires when amplifier is powered on. Rarely does over driving the amplifier cause the transistors to blow. Dry joints from excessive heat can be another factor for the outputs to go into thermal runaway and blow out.
At 1:46 I meant "composite" an not "component" video.
Whats your inspiration for the intro?
I got one of these receivers in working condition from my in-laws. I don't blame you for scrapping it, but it sounds very good being used as a 2-channel or 2.1 unit as well. I sold mine because it had only analog inputs and all my TVs are digital only (and I have a Technics stereo receiver already that sits in my shop).
I'd love to see you do more audio equipment repairs or tear downs, as this is something I've always wanted to try, but I am a bit daunted by all the complexity.
Yamaha made some really good receivers. I remember the Yamaha RX-V2090 5 channel receiver with dolby pro Logic in 1993. This was Yahama's top of the line receiver back then. It was so built and sounded good while watching a movie using Canton Ergo 90 speakers
Bro teac 8800 av receiver only front lift right chanels not sound bro centre back sorrounding is good work but problem plz reply me
My co-curricular classes at school teaches students about robotics and electronics. Another class had a wide-format printer break and donated it to us. in less than an hour, we had the thing cut open and divided amongst other students to de-solder the components to be sorted into boxes. Later that afternoon, the teacher who donated the printer asked if they were going to fix it. "no." he said with a smile on his face. \
the printer was worth more in parts than it cost to replace...The students had a fun afternoon beating eachother with cat-of-9-tails fashtioned out of gears the wiring from the printer...
I have the slightly lower end than that model it uses the exact same power supply configuration transformer and amp stages. That is not due to useing a low impendance speaker nor has it anything to do with the rail voltage selector. That is liquid damage.
I was enjoying watching your video. Good job. I bought yesterday RX-V596RDS and noticed that volume knob is loose and has play up-down.
After cover disassembly it turned out that solution is simpler. Just removed volume knob and used socket key 11 mm to screw the nut from motor shaft.
Job done😅
Great video! We need more videos with techniques for fast massive salvaging of components.
I have a Yamaha RX-595 and a intermittent mode selector with remote control capability. Your video was very good but it did not concentrate on the selectors. Can the contacts be cleaned while installed such as with a contact cleaner? It has a metal housing with some holes that surrounds the selector and gear connection for the remote control motor that is mounted 90 degrees to the selector shaft.
salvaging parts was the only right thing to do,trying to repair such a big damage like that costs way more than buying a good working used unit.
Hallo, ich schreibe mal auf Deutsch, da ich einen entsprechenden Akzent in Deiner Englischausführungn heraushöre - ich hoffe, ich liege da richtig. Ich habe den Yamaha dsp a595a auch und wollte gern meine Boxen mit Bananensteckern anschließen, stellte aber fest, dass die Speaker-Schrauben keine Kappen haben, die man abnehmen kann, um den Banana-Eingang freizulegen. Was kann man tun ? LG
Have you visited Oslo? The intro showed a single ticket from one of Oslo Sporveier's vending mashines! I'm curious at the circuit you used to monitor the signal from it.
I have this unit and still works good. My issue is the power/standby button came off. Can you tell me does this somehow glue to the power switch inside the unit or does it somehow mount to the face plate. Seems like it snaps into the face plate but when i push on it, it just pops out.
yamaha RXV1500 AV receiver,the fuses are 3A,mounted on 3 vertical circuit boards,they are sealed inside small brown plastic boxes,how do I remove them to look at the fuse filaments?
It looks a lot like someone/something spilled some liquid in it, given how there such a large area affected. The capacitor also seems too small to contain such an amount of electrolyte.
there are a very nice works.
I discover your channel 3 days ago, and since now i see some of yours video tutorials.
i want to ask you were to find the transistor probe you'll used in this video (see it at 09:00)
if you can, give me a link please.
thank for all and escuse me for my poor english.
(i'm from italy )
Zola
hi am from Trinidad &Tobago i love your videos, i do the same as you by finding or buying items to fix. keep up the good work sir
So those little black pieces are the amplifiers?? Damn those are small. And they put out how much power? Anyways are those “mosfet” style? And is that considered, class a/b, d...etc?
That receiver was damaged from a liquid spill, it did not do well. The damage was extensive.
You made the good choice and scrapped it for parts
Hi ! I have question ! I buy transformer from Yamaha RX-V1500 . But are not what it’s the primary and secondary and how much watts ?
One Sade it’s 8 wires and the other side it’s 8 wires but minor caliber ?
Nice video. I have one receiver YAMAHA RX-V430 and it was in the box storaged for a long time and one day I decided to power it on but it was completely dead no power at all. I checked the fuses and the power in the power supply = 13,3 DC OUT PUT. The capacitor on the power supply is normal there is no blurber. What would you suggest for me to do?
I'm into vintage receivers and tinkering with them. Just seen you for the first time right now. Will check out your videos now and subscribe.
In meinem YAMAHA RX-V592 RDS sind im inneren auch solche Teil wie bei 09:59 im Video zu sehen. Wozu sind die? Gutes Video
Hi i have yamaha rxv420 and The same problem. Torn on but after 2 second turn Off. Show display status p5 prt 210 B. All pcb look nice. Maybe you have idea thats problem that check i should?
My Yamaha Receiver RX2065 seems to have a problem, when i select USB Mode, the USB stick light flickers, then the display say's click free, and the remote doesn't connect. I Need Help , Any ideas please. Karl Tasmania Australia .
no joke i scavenged the exact same model last year and used it make a coffee table with speakers in the side which ive named SUB³. interesting tear down, im loving the videos lately :)
try fixing it, they have (more than) decent sound
Yup. I have the same one, sounds amazing for a mid grade appliance...
May i ask you something about this receiver..? is this receiver had backup batere (like c-mos batere in Computer). in ask this because every time i did setting for my receiver like Speaker (small or big), Speaker Volume (Centre, & Surround), then i'm unplug the ac cable power. when i plug in ac cable again.. all seeting that I already set, back again to Factory Setting. do i have to keep ac cable always plug in to keep this setting...?
I like the explanation of your thought process in your videos
Hi Sir,
Is it possible to manually upgrade Yamaha HTR1840 into HTR3072. Please suggest parts or any other method if possible.
I was glad you were able to recycle so much stuff
I am not very technical, so bear with me. I have the same receiver as in the video. It still works... except the display. Do you know of a fix? I would love to keep using it. It would just be a better experience with a working display. Thank you for any tips!
It is a bit late now. But you might be lucky, that the display is actually alright. Just the light bulb of the background lighting might have died, so your display can't be read...
Thank you for your work and process, Gerolf.
I would have taken one look at that corrosion and ran. Now, watching this while contemplating repairing the finals of my RX-V679, I'm reconsidering.
Haha! I had one of those when they were brand new.... Not CRAZY Expensive, but pretty expensive.... Sounded very very good. Too late now, but I would have suggested you repair it.... I have a newer one downstairs, too, that isn't working.... Yamaha RXV, I forget the number.... Volume control quit working.... Your videos are inspiring me to take a look at it....
Hey man. I have an older Yamaha A/V 5.1ch receiver that I would like to use in just STEREO mode and disconnect the on board amplifiers and bypass them to an external 2ch pro audio amp.. I dont have preamp outputs. Just rec out. Do you think there is a point in my receiver where I can desolder the on board amp/s and solder in some RCA connectors to go to my external amp? I am sorry for this confusing question but I have looked and looked and havent found anything like what I mentioned. This vid was the closest and I figured you could tell me if its even worth trying?
Thanks.
Niko Bellic thank you for the reply. I will look into that converter thing. I went on ebay and found an older home receiver with preamp out for 40 bucks. . I just don't have video switching now. Oh well, it's LOUWD. I purchased a Behringer km1700 amp. Rated at 1700 watts peak but when I do the math, it's actually a little above 500 watts rms per chanel into 4ohms. I am happy but it would be nice to have video switching back.
Thanks
Great video, its crazy that even in todays Yamaha's AV receivers that they still don't add a good cooling system (especially with the price tag Yamaha asks for these systems, knowing they have overheating issues) Ive lost count at how many youtube repair videos are out there where the problem is always heat destroying the caps, or other component's on these AV receiver's
Back in the 90s when I was doing similar things with electronics, those rubber insulators were called 'mica washers' (I think).
I've heard them called "sil pads" (I think it's a trade name) because they are made of silicone rubber. Older tech used mica wafers which were brittle.
We call them thermal pads these days in the PC scene you used them for MOSFETS on graphics cards which need active cooling from your heatsink or waterblock
I have Herman kardon avr 70, display is OK, but not sound, not audio out, please help me
OMG, two days ago I had the SAME maintenance on my RX-V995, it was starting and then turning off immediately exactly like yours, I just gave up disassembling the boards, and cleaned it with a long brush, patience, much sneezing by the powder, and them washing it with Hexane, the unit is running like new. I wish I had a look on this video before my adventure lol.
Gute Sache. Welches Oszilloskop nutzt du?
I am looking for input and program knobs. Can you give me those?
I did something stupid and fried my Yamaha system. Can you help? When I turn volume up it makes the most terrible electrical distortion sound.
I have a yamaha RX-V870. not sure if it is working yet. My plan is to fix it if I can, otherwise it will be scraped for parts.
Подскажите пожалуйста, ресивер yamaha htr-5630rds как зайти в сервис меню?
I have the V396 model of this amp, it has been working non stop for almost 20 years
i have the same unit that is working fine only problem is if the power goes off from the electric company i have to preset the stations again- can you or anybody show me where is the backup memory battery location is
That's composite video, not component (YPbPr).
I would love a video of you utilizing the Op Amps you recovered. I still havent completely wrapped my mind around the concept of them.
Hi, Apocalyptic. I lihed your video. I would like to tell me how to test a power transistor to know if its good or it's not'. Thanks.
Pepito Valdez buy a component tester. They can be had for a low price ~10-15usd
Is there any way to install preout hole on receiver which doesnot have preout.yamaha rx 571
Sir I Need Your help please
Can you explain me how to change the bridge of mono cable to mono neutrick
Reply soon as possible
Thanks
i thought there were some tactile smd switches there, also good; and what about the display? usable?
Yes, with the datasheet.
Thanks for the video, I have a similar Yamaha amp, however, mine shuts down after a few seconds, it seems like its a overload circuit that is confused, have you experienced this before. I also have a technics amp that is doing the same.
Hey, thanks for your video, I was actually having some issues with my Marantz SR-5011 receiver (it shuts down by itself after being on for many hours and enters an error mode with the power led blinking) and was searching for some similar experiences. I started to watch and then just got curious. At some point you mentioned the possible explanation for the Yamaha failure as having to do with some incorrect impedance used and then I remembered that I had set mine to 6 ohms with the previous speakers and my new speakers were 8 ohms. I am curious if it solves the problem. Thanks again!
Do you know how to reset the self protect on Yamaha MX A5000? Thanks in advance
i have a similar one. When i turn on a low vol beep coming from speakers . Why is that ?
Mine is fried ! Between cat pee & lightning & it being 20 years old & trying to adapt it to new tech . I am joking about the cat pee , but , it can be a real corrosive problem. My Yamaha R-70 from 1982 was of higher quality than the later more recent RX series , what a surprise. "They don't make them like they use to"
Hello, I have a problem with memory backup at my Yamaha RX-V520RDS, so maybe someone could help me solve this. Even short, power loss receiver loses memorized radio stations. In manual there is the statement:
"Memory back-up
The memory back-up circuit prevents the stored data
from being lost when this unit is set in the standby mode.
If, however, the power cord is disconnected from the AC
power outlet or the power is cut for more than one week,
the memory will be erased."
As it is stated if the receiver is without power for more than one week, memory is erased, but in my case, it is erased instantly even if it is unplugged for 1sec.
In the service manual, I tried to find something about back-up circuit , how it stores data or does it have some kind of battery but could not find anything.
Do you have an idea what could be wrong with memory backup? Should there be some kind of battery or some larger capacitor which provides power for memory backup?
This is the only issue I have with this receiver, everything else works flawlessly.
Thank you.
Looked like a good call not trying to repair it. Just to much damage!
I am excited to see what you do as I kept my old and partially failed Sony surround receiver for the same general purpose of salvaging parts from it.
Please, make a video with the vacuum fluorescent display run on arduino (or something similar)!
I've been trying to do that, but didn't know where to find a good multiplexer, that can handle that voltage.
I have used some 74HC595 shift registers with 3904 & 3906 transistors on each output to drive multiplexed VFDs. The transistors drive the VFD pin high, and resistors pull the pin low.
Newer VFDs are fairly low voltage, most of mine run on +10v & -20V.
Thanks for this video I want buy Yamaha receiver which is best receiver?? from demege?
Sir i got a problem...My amplifier is giving distortion on center speaker only
My theory is the capacitor blowing may have been unrelated or happened after the actual damage. To me it looks like someone spilled some liquid in the top. Since these have an open grill to vent the heat, it would be very easy to do accidentally.
I have an iwal but I turn it on and it lasts for a few seconds and it goes out just what will it be? help
I really need help my receiver recently Started dropping all volume as soon as bass notes hit I don't know what it could be any suggestions would be helpful but I feel like it might be the output capacitors
I had the exact same problem. I thought I would have to get it repaired. Turns out, my Samsung tv was blinking on and off and when a friend came over to help me disconnect coax cables, one was no good and once we removed it, the tv was fine and I just jumped out of bed to test the receiver and it works at high volume! Check all your wiring in your stereo system
Got the model lower down than this the 393, must of had it 15 years+, decent sounding amps, never had any trouble with it
it's probably broken because the overheated controller chip set and also audio amplifiers that have no heat output or fan Cooling
I recently have bought exactly the same receiver for my friend, but perfectly working, except one minor issue. I found it very nice sounding and musical in my stereo setup, so good that decided to keep it and by another for that friend! I think you should not dismiss amplifiers just because they have more channels than you need... ;) By the way, is CD player ok? I would really like having a matching one to my receiver, but did not find any for sale in europe. I guess postage would not be completely insane...
Thanks for your great videos!
And if you still reading, would you by any chance sell me that big motorized potentiometer? Mine is a bit noisy...
is it possible to make a VGA to scart cable? (with no converters)
How many patrons have you had
The cause of the issue was some one spilled some fluid into the unit and then shorted parts and trace burns outs and massive corrosion.
Can it play in dual stereo mode? I want to connect 2 bass speakers on main speakers (with crossover for low band) and another 2 speakers on other 2 channels (as a satelitte speakers wit crossovers for middle and high frequencies) I am not interest in any other combinations, so it's fine to me even I must make some changes in internal input connections. My wish is to make quasi bi amp (passive) from this receiver.
I wish i had your knowledge. . . I have 5 amps that have all broken over the years but I dont know any one who would be able to repair them. . 3 are from self powered speakers which are all pro grade stuff and cost me a lot of money to purchase. I would just turn them into passive speakers but to do that I would have to build customr crossovers, which i plan on doing just have had the time or money lately . . . . it kinda of sucks. . . . :( I wish there were people like you inthis world. . . lol
I am getting a ps 192H error is this fixable and does anyone have any tips ?
Yamaha av resiver 6130 ko tv se kaise connect kare demo lg tv se
Lab power supply project confirmed.
Switching pre-regulator + linear output regulator?
Seeing the parts you chose to scavenge im going to assume a variable power supply but im excited to see what you really do with it.
"No User Serviceable Components Inside.""
in mexico is sooooo difficult to find original power transistors :'(
It's just as hard everywhere. Fortunately we have ebay and post services here.
I use a quite not very expensive Technics 1987 rack stereoset in the garage. Thing is the garage is most of the year humit, very. In winter it freezes, in a heatwave the clear plastic roof makes it like venus. This extreme condotions have not hurt the Technics, there is not a spot of corrosion inside. Either this expensive Yamaha houses ultra low grade components or is been subjected to abuse far beyond what I do to the Technics.
This is what we use to class as a non-economical repair in the trade decades ago. Not worth the bother unless the customer was so very desperate for that item to be fixed and willing to pay for the time, parts and labour. Yes! it is a real pain to repair stuff like this and even more so on today's SMD stuff.
hmmmm I have a slightly earlier model . Shutting off. plays for about a day or day and 1/2 about every 7 days. have not opened up yet.
What’s the project he did after this? Anyone got a link?
Looks like amplifier was a victim of some sort of liquid spill with nothing must've made a bang on the capacitor went off
We're did you get that tester?
Tja ohne Lautsprecher ist das ganze natürlich ziemlich sinnlos das ding zu reparieren abr ich finde das Gehäuse kann man nur schwer wider verwenden
someone overpowered that amp or spilled liquid in it. usually overpowering is caught and the protection circuit is tripped turning it off and protecting speakers and the amp
what are the little solenoids for?
listening to you describe the damage, you are describing a lightning strike.
what are u going to put inside this enclosure?
Im assumeing a power supply but thats just my guess
you needs a old sansui to recap n restore or pioneer sx1010 best fer clean sound n loud
I'm guessing lab power supply :)
by the way those isolation tabs are usually silicone for good heat transfer.
Yamaha RX V467 DEAD NO 5V COMMING HOW CAN I SOLVE
Fantastic video mate...
DO YOU HAVE REPAIR SHOP SIR