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Hi-Fi Amplifier Right output speaker channel from amplifier crackles and spits in response to music being played. Left channel perfect. The same problem happens when headphones are plugged in. Hi-Fi speakers in A1 condition. I have a digital multi-meter but unsure of settings and where to locate on the amp circuit board.

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OK......if you dont know "where to locate on the amp circuit board"....then you shouldn't be attempting to repair it yourself.

If you should accidentally short 2 solder pads together with a meter lead, you WILL cause very expensive damage to the amp.

The smoke you will smell will be coming from the amp and your wallet.

I would strongly suggest that you take it to a repair shop. Diagnosing and troubleshooting an amplifier is best left to the seasoned pro's. Not because I am bragging, it is because they are a complex thing, and there are no moving parts to watch and let your brain " figure it out ". It never changes the look, whether it is idling or running all out. You must understand transistor theory and implimentation.

As far as crackling and sputtering, it sounds like you have a pre driver problem, or a biasing issue. Neither of which should be too terribly expensive to fix, unless the amp is really old, ( +25 years ) then all the transistors become suspect, because, contrary to popular belief, they don't last forever.

Best of luck....Rob

Posted on Mar 13, 2008

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