Vox AC30CC2 Normal Channel Problem

TimmyP

Member
Messages
2,488
As the Normal Volume control is turned up past about 2:00, the signal level quickly decreases to zero. Also, switching on the Brightness kills it no matter what the Normal Volume control's setting.

Any guesses before I pull the front panel board?
 

dbun

Member
Messages
844
I would guess the bright cap that is across the Normal Channel volume pot.

The brightness switch brings in another cap to increase brightness, but I think there may be one across the volume pot as a default value.
 

Cirrus

Member
Messages
2,429
If the cap was shorted it'd just be at max volume. If it was open it just wouldn't do the job of making things brighter when the gain is turned down. So my guess is that the pot itself is dodgy

No matter what you're going to be in for a treat - the front panel board is a bitch to get out by the accounts I've read but if you follow the circuit with a multimeter you should be able to home in on the problem.
 




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