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FDP Forum / Amp Mods, Repairs, and Projects / Amp volume loss

STR87

Panama

Sep 23rd, 2016 02:07 PM   Edit   Profile   Print Topic   Search Topic

Hi,
I currently own a Laney cub 12r head and while playing at a gig suddenly the volume goes down approximately 50% and sounds like a fuzz with low batt.
I changed all the tubes and still get the problem. It happens after a while of playing at loud volume. then i turn the amp off for a minute and back on, and it's good for a little while.
I can't seem to pinpoint the problem.
Any suggestions?

pdf64

UK

Sep 24th, 2016 02:54 AM   Edit   Profile   Print Topic   Search Topic

I guess it will have a low spec, single sided, non-through hole plated pcb?
If so then maybe a solder joint is has failed.
I suggest a close examination of the board, using strong light and visual magnification. Pay particular attention to joints that are subject to stress, from sources such as heat, current, voltage, vibration.

FDP Forum / Amp Mods, Repairs, and Projects / Amp volume loss




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