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Repair [message #23916] Fri, 25 September 2015 06:42 Go to previous message
stevem is currently offline  stevem
Messages: 4746
Registered: June 2004
Location: NY
Senior Member
The output stage will see no load without the / a speaker hooked up.

I wonder if the amp is oscillating at full tilt power when the issue takes place, that would / could make the light glow brite and also block the amp from passing input signal!

Osscilation can take place above the frequency that the speaker you have the amp hooked up thru can reproduce and make for the ntermitant issue you have.

One way to prove this out is to keep your voltmeter that is set for AC volts hooked up across the speaker, when the brite bulb issue takes place if you read any voltage on that meter than the amp is indeed osscilating and we need to help you pin down where that is originating from in the amp.

[Updated on: Fri, 25 September 2015 06:43]

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