Question about Yamaha DSP-A3090 7-Channel Amplifier

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Yamaha DSP-A3090 sound problem when viewing movies

I have a Yamaha DSP-A3090 my problem is the sound goes in and out for about 30 to 45 seconds on must of the channels also when sound goes out the digital display flickers I brought this unit in 1996 new
and yamaha do not make parts for this unit anymore please help.

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  • Todd Farm Jan 22, 2008

    I have the same problems with my Yamaha DSP-A3090. The remote switching of sources keeps rotating the selector know back and forth. The digital source from the optical connections keeps dropping. I am having a hard time trying to find some to repair it--even the shops that repair vintage Yamaha equipment.

  • pru00696 Jan 30, 2008

    I have the same problem with the audio cutting in and out with the display flickering on most of the audio sources. My thoughts are the source selector switch making poor contact. I can simulate the problem by gently wiggling the source select switch. Would appreciate any other thoughts.

  • fesjam Feb 03, 2008

    I also have the same problem with the input selector switch changing inputs. Could it be the switch?

  • Anonymous Feb 25, 2008

    My input selector in my Yamaha DSP-A3090 flickers and sound goes on and off so many times that makes the sound unbearable. Bought it new and after 7 years Would not replace for anything else because of the wonderful sound and many years of pleausure, but had to buy the Pioneer Elite top of the line because couln not find the part for my yamaha.

  • David Joyner Sep 26, 2008

    I have the same problem regarding the input selector going back and forth and sometimes not hitting the correct input chosen. I want to try and clean the contacts as stated. Could I get some more detail in finding the contacts and and what exactly to do to clean them. I have not been able to find anyone that will do this for me. Thank you in advance.

  • MICHELRAF Nov 20, 2008

    hello i think i have the same problem , soung comes and go  in any position selection; that ' very worrying , i don t know what to do to carrect this ;and the telecommand doesn t go to the selection i choose too ; ;anyaway it stills sound good but i am looking for anither new one  yamaha 3800 ;is it worth it ? or may be i could give my dsp a3090 to repair but i m afraid of the cost ; HELP

  • Anonymous Mar 03, 2009

    I have same problem and was able to find a replacement 5 years ago, but now the new one has gone bad. Yamaha won't help, so when i do replace it, i'm going to have to go with a different brand.

  • MICHELRAF May 11, 2010

    hello i take off the switch and clean it but when i put it back this time i don t have any sound at all that s worse , did i make a wraong operation?



5 Answers

Your right on the money. I de-soldered the switch removed and cleaned out the contacts with contact cleaner from Radio Shack and some Q-tips. It now works perfectly. It also corrected the problem of searching for the selected input with the remote control. They no longer make the switch so this is your only other option.
It is not that difficult to remove the switch. The ribbon wiring just pulls out to get access to switch and board.
Then de-solder the switch off the board. You can then remove the switch and take the contacts apart. Just mark the position of the rotary contacts so you can put it back in the same position.

Posted on Mar 19, 2008

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Guys.... very sorry but you all have a problem with your input switch. this is a common problem with yamaha designed mechanical switches. It was later updated about after a year because the original did not last long enough past the warranty period, the contacts were replaced with gold plating. But by this time i guess it must be really hard to find a replacement. more than 10 years now, must be really phased out.

it can be cleaned by contact cleaners, those that does not leave any liquid residue and then blow dry and will probably work for a short period only and will go back to abnormal operations. symptoms is not only intermitent sound but switch will sometimes turn itself left-right.
have worked with Yamaha service Al Khobar Saudi A.

Posted on Mar 19, 2008

  • Redentor Rivera Mar 25, 2008

    just wait for few weeks or months.... let's see how your system works. after you have cleaned


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Could anyone explain more of whats stated above regarding cleaning the contacts such as location..etc?...I have the same problem with my 3090 and I would like to keep it running. Any help or direction to somewhere would be much appreciated.

Posted on Oct 21, 2008

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  • 54 Answers

Sounds like a cold solder joint around the imput to the power amp stage on the board. If you can get to the board take a bright lamp and a magnifying glass to chek for solder joints that are frosty looking .If so heat them up and dab solder to make them shiny.
Good Luck

Posted on Nov 03, 2007

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If the sound cut off in 35 second .please reconnect speaker wire
make sure it good connect .goodluck

Posted on Mar 17, 2008

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