Yamaha DSP-AX759SE power amplifier repair

How to replace a capacitor on various Yamaha amplifiers which s a common cause of failure

[@olivierbertin8049]

Hi, same issue with my RX-V659, also fixed with new 22nF / 630V capacitor. Thanks a lot for posting !

[@johnpfeffer3933]

My ancient RX-V1800 that had a powering on problem sometimes so retired a couple years ago, got pulled back into service recently as my music amp. After a week or so of reliably starting, the random failure to start issue returned requiring a power cycle which sometimes worked and occasionally didn’t. So having seen the short video from CARBON and now your far more explanatory video, I’ve swapped out the Cap. The V1800 cap is not quite so conveniently located requiring pulling the power board out to access the Cap, but still a very easy task. Hopefully that was the only issue. Time will tell… thanks for the guide.

[@professionalidiots101]

This looks like the problem I have, great video, and thank you very much 👍

[@dannytyrer7689]

Hi, I have the rxv650 receiver and after watching a film last night I used the remote to change the surround setting and the amp switched off and now won't power back up hopefully it is the same problem, this little capacitor seems to be quite a common problem .... Fingers crossed

[@user-oy1kt6vl6r]

kindly tell me the solution i have yamaha Rx v861 Master audio with HDMI when i play dvd player with HDMI suddenly avr off avr not on till now

[@nonorobo]

merci merci merci merci merci merci merci merci merci merci merci merci merci merci merci merci

[@adriancostea2869]

I have Yamaha rx-a1030 . DSP A1-1 DSP Margin problem as per Self Diagnosis. The solution is the same? The same capacitor model must be changed ? Thank you very much for the possible answer !

[@jadbhodia1928]

Hi Dan, super thanks for the video. I’ve just ordered that same capacitor, does the capacitor have a positive and negative. I’ll change mine next few weeks. Thanks

[@DannStarrElectronics]

Hi, some capacitors it does matter, but as far as I can remember, this particular one is not polarised and so doesn't matter. Just check for any markings on the old and new ones and try to match them if so.

[@jadbhodia1928]

@@DannStarrElectronics Thanks again, my amp only went down last week and your video that’s 3-4 years old is still super valuable!!

[@garygendron2780]

I hope you remembered to remove those 2 previous capacitor’s legs you cut and pulled out, then laid them on top of the power transformer. I didn’t see that you removed them and now they could be floating around inside the unit looking for a place to short out something.

[@DannStarrElectronics]

Absolutely 👍

[@lukaszannopol13]

Hi. In my yamaha rx-v477 tand by mode works. After pressing power, I hear two clicks and nothing else happens. Could it be a capacitor?

[@trangtvnguyenhuynhkimtrang7292]

Thank you for sharing , You can help me ! Amly yamaha rx v750 not power .I can't find the value R412 near the c405

[@adzkiafamily8348]

good

[@santhoshmaran6332]

Hello sir Yamaha rxv 463 same problem in receiver . I see in power supply board not having 22nf capacitor ...

[@shahzadaudio7119]

Hi sir I have Yamaha dsp 110 problem power on take time need to press more then 30 times after working what is problem there any battery charge maybe weak ?

[@ndjadhav1985]

I use avr yamaha rxv665 but suddnly decoder mode off so how is fix this plz help me

[@kenhreview9636]

Hi. My ax3900 has power up. but overheat error. even though it's not hot Do you know the cause of it?

[@DannStarrElectronics]

While I don't know exactly, it sounds like it's a sensor issue

[@topouzidd]

Just out of curiosity, how much would you charge for this fix?

[@lorenzowong1980]

Hi I've got the RX-A740... it has a round Th371? Is that it?

[@DannStarrElectronics]

Hi Lorenzo, I'm not sure sorry

[@davidnico3573]

same problem i have a yamaha rx-v440rds receiver Not powering up. please help

[@prajnart5736]

Hi ! Are you familiar with Yamaha TSR 7850 receivers ? Would be so grateful if you could respond ! Thank you

[@DannStarrElectronics]

Hi, sorry - I'm not familiar with that model

[@djkikecostarica506delgadoc5]

Buenas amigo tengo un receiver yamaha rx a730 que no me enciende , me puedes ayudar

[@shibbo1969]

Can you put a link on to the capacitors you used as I cannot seem to find any with my original Yamaha part numbers? Thanks

[@DannStarrElectronics]

Hi Ian... I shall try to get this info for you

[@DannStarrElectronics]

@ian shibley store.brightcomponents.co.uk/product/10x-22nf-0-022uf-223-polyester-film-capacitor-10-pieces-630v-max/

[@shibbo1969]

@@DannStarrElectronics thanks for information,I have ordered some,fingers crossed it fixes my problem 😀

[@JNET_Reloaded]

mine just clicks it dont turn on will this fix this issue?

[@DannStarrElectronics]

There's a good chance yes, it's certainly worth trying

[@JNET_Reloaded]

@@DannStarrElectronics DSP-AX640SE turns of after 3 seconds what capicitor should i change? according to the service manual its an issue with the dc side of the ps, ut its unclear what cap i should change, any ideas?

[@PaulMoorhousehankooks]

Mine comes on then goes straight off i think it could be a 3 leg cip

[@nelsoncoimbra6325]

did you get yours working? mine does the same. Turns on then imediatley turns off

[@PaulMoorhousehankooks]

@@nelsoncoimbra6325 I’ve took the top board off that’s the problem it’s got burnt out caps and resistors

[@PaulMoorhousehankooks]

I’m waiting till I get another board to replace it

[@dannytyrer7689]

Hi, I have the rxv650 receiver and after watching a film last night I used the remote to change the surround setting and the amp switched off and now won't power back up hopefully it is the same problem, this little capacitor seems to be quite a common problem .... Fingers crossed