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Audio and Video Talk
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Seeking schematic for Rotel RB-890 power amplifier
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<blockquote data-quote="joel" data-source="post: 94285" data-attributes="member: 406"><p>An interesting aside and one that unfortunately wont much help, but here goes anyway.</p><p></p><p>A while ago a friend of mine received an amp to repair.</p><p>The problem was eventually traced to a overtightened toroidal.</p><p>This caused the winding to rub together and eventually short out causing a spike downstream.</p><p>I mention this as its possible that something similar is happening and that the channel blows when a component reaches a critical temperature and then breaks down. Perhaps a heat gun or cold spray could be off help in problem solving</p></blockquote><p></p>
[QUOTE="joel, post: 94285, member: 406"] An interesting aside and one that unfortunately wont much help, but here goes anyway. A while ago a friend of mine received an amp to repair. The problem was eventually traced to a overtightened toroidal. This caused the winding to rub together and eventually short out causing a spike downstream. I mention this as its possible that something similar is happening and that the channel blows when a component reaches a critical temperature and then breaks down. Perhaps a heat gun or cold spray could be off help in problem solving [/QUOTE]
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Audio and Video Talk
General Discussion
Seeking schematic for Rotel RB-890 power amplifier
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