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Junior Varsity
Amplifier problem, need some troubleshooting help.
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<blockquote data-quote="J.T. Pickering" data-source="post: 11620" data-attributes="member: 7753"><p>I have a Yorkville AP4020 amp that has an issue, and I don't have enough knowledge of amp internals to know what to look for. Here's the problem:</p><p></p><p>Channel A works great. Channel B is not so happy. Sending it a very low level results in distorted sound. Sending it a reasonable level results in it immediately going into protect and stopping all output.</p><p></p><p>I opened it up to check for any obvious/visible problems but I couldn't see anything; although the way the amp is built makes it hard to see most of the internals without taking apart more than I really wanted to at the time I was working on it.</p><p></p><p>I'm reasonably handy with soldering and replacing components, I just don't know where to start looking for the cause of this problem.</p><p></p><p>Any advice is appreciated, thanks for looking!</p></blockquote><p></p>
[QUOTE="J.T. Pickering, post: 11620, member: 7753"] I have a Yorkville AP4020 amp that has an issue, and I don't have enough knowledge of amp internals to know what to look for. Here's the problem: Channel A works great. Channel B is not so happy. Sending it a very low level results in distorted sound. Sending it a reasonable level results in it immediately going into protect and stopping all output. I opened it up to check for any obvious/visible problems but I couldn't see anything; although the way the amp is built makes it hard to see most of the internals without taking apart more than I really wanted to at the time I was working on it. I'm reasonably handy with soldering and replacing components, I just don't know where to start looking for the cause of this problem. Any advice is appreciated, thanks for looking! [/QUOTE]
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Junior Varsity
Amplifier problem, need some troubleshooting help.
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