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r/audiorepair

Image 1 — Receiver repair
Image 2 — Receiver repair
Image 3 — Receiver repair
Image 4 — Receiver repair
Image 5 — Receiver repair
▲ 6 r/audiorepair+1 crossposts

Receiver repair

Hi all, I bought this Sony STR-K840P receiver from a garage sale, and only the center speaker channel seems to work on it. The subwoofer also works. The other speaker channels are audible only when on full volume, and even then they are super quiet. I have tried factory resetting it and trying different speakers but it stays the same.

I opened it up and inspected it for any broken traces, cracked solder joints or anything else that could be causing a problem, but other than a layer of dust (which I cleaned off) I didn’t see anything.

I have tried it with my stereo cassette deck, as well as my Sony KV-36FS100 (has stereo output) but the results are the same.

What can I do to fix it?

u/theelectroniccartel1 — 3 days ago
▲ 13 r/audiorepair

Don't beat yourself up

Just a reminder that mistakes happen. Today my probe slipped and I made the magic smoke appear. For those that are just starting out (like me) these things will happen and use them as a learning opportunity. In this case, I get to replace several components I shorted. Luckily, digikey has everything I need.

Mostly posting this because I was annoyed with myself and then it came to me, this is part of the deal. Mistakes will happen even to seasoned pros.

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u/organized_chaos23 — 11 days ago