Amp gets quiet after a while

Sydius · 1672

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Offline Sydius

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on: June 07, 2014, 07:14:04 PM
My Bottlehead Crack with speedball kit has been working really well for months now, but it has just started having a strange problem: it's fine for ~20 minutes and then very slowly gets quieter and quieter. I can adjust the volume to compensate for a while. Turning the power off and on again fixes it for a while.

What might I check?


Offline Paul Birkeland

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Reply #1 on: June 08, 2014, 09:21:35 AM
This is probably a funky solder joint that is responding to the amplifier heating up.

If it's on both channels, I would be highly suspicious of the twisted pair of wires leaving power transformer terminals 4 and 5 going to B7/B8 and A4,5/A9.

-PB

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

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