Pioneer SX 626 audio issue

[GGALLIN1776]

I recently acquired a Pioneer sx626, it works great aside from all of the right channels, A, B & C. I used crimp on blade terminals to get around the stock plugs, when i plug into the connectors I'll get a static sound upon contact (assuming that's just the shared ground), then nothing else. I checked the internal & external fuses (five in total I believe), all intact. I went through & took pictures of all the boards, nothing looks disconnected.
Any idea what the culprit(s) might be & how much it would cost to repair?

 

[americanaudiophile]

Could be bad or dirty contacts in the switches. You could try to clean them. Deoxit works great.
Could be bad relay if it has one. That can sometimes be cleaned but many are sealed.
Could be a blown channel. That's worse case scenario. Could be fixed but not at all cheap.
Did you check the fuses with a VOM or just visually. Sometimes they blow where it's hard to see.
Static sound could be low level DC on the speaker terminals. Normally you would not hear anything when connecting the speakers.

 

[GGALLIN1776]

@ americanaudiophile,
Yesterday I picked up some CRC QD electronic cleaner & sprayed out all the pots/switches/fuse & speaker terminals, etc.
As far as the fuses just visually, then I swapped the working left channel fuse into the right, only the left worked still so both fuses are good.

I asked one place for an estimate (which they wouldn't give, they say it's impossible to give one) but at very minimum they'll charge $150 & it'll be on the bench for months. I'm pretty confident that if I knew which caps, etc to replace & which ones to purchase that I could do it myself. Like with cars, i'm not the best at diagnosis(ok, more like I suck at it haha) but as far as swapping parts I get decent results. The boards have nice open spaces, not cluttered like modern stuff so the soldering shouldn't be too difficult.

 

[jsmithepa]

While having the cover off, turn it on and listen for a relay CLICK. If you hear such a thing, find this relay, it would be relatively large, dice-size, tab it with something and if it start making sound then this relay needs to be replaced.

Old stereo are not worth paying to fix, unless you have some kind of emotional attachment to it, or this happens to be a classic, signature, reference blah-blah and I don't remember a Pioneer in that category.