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Junior Varsity
Amplifier problem, need some troubleshooting help.
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<blockquote data-quote="Ivan Beaver" data-source="post: 132575" data-attributes="member: 30"><p>Re: Amplifier problem, need some troubleshooting help.</p><p></p><p>Since I was a bench tech for most of my career-I will add this.</p><p></p><p>Even when you find a defective component-DON'T STOP THERE!!!!!!!!!!!!!!!!!!</p><p></p><p>I would always check every "active" component in a device (transistors-diodes etc).</p><p></p><p>Very often something ELSE caused the failure.</p><p></p><p>Look VERY carefully at the resistors-some of them burn with just a tiny band of burn.</p><p></p><p>Be sure to check all the emitter resistors.</p><p></p><p>If there are any ICs that are in sockets-swap them between channels.</p><p></p><p>i will admit that I did not do this every time-but only on amps that I had fixed the same problem many times before.</p></blockquote><p></p>
[QUOTE="Ivan Beaver, post: 132575, member: 30"] Re: Amplifier problem, need some troubleshooting help. Since I was a bench tech for most of my career-I will add this. Even when you find a defective component-DON'T STOP THERE!!!!!!!!!!!!!!!!!! I would always check every "active" component in a device (transistors-diodes etc). Very often something ELSE caused the failure. Look VERY carefully at the resistors-some of them burn with just a tiny band of burn. Be sure to check all the emitter resistors. If there are any ICs that are in sockets-swap them between channels. i will admit that I did not do this every time-but only on amps that I had fixed the same problem many times before. [/QUOTE]
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Junior Varsity
Amplifier problem, need some troubleshooting help.
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