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Guitars, Gear, Tone!
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PostPosted: Mon, Apr 16, 2018 12:02pm 
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Hack

Joined: Mon, Apr 16, 2018 11:35am
Posts: 1
Are you human?: 951
I've come a long way on this poor amp. I was the unfortunate buyer of an amp that had been messed with. Anyway, I put in a new ClassicTone tranny, and found the channel switching was compromised. This amp had jumpers under the board in the relay area ( Relays 4 and 5 ). I changed the 2 diodes (6 & 7) and lo and behold it partially switches. I can hear the amp switch, and the controls react, but the indicator led on the channel doesn't change, and the input signal is not switched. I've got no schematic, so I'm in the dark here. Anybody got a schematic for the PREAMP board. I realize most of these amps need a PT (this one did), but other problems do come up. If you've had this problem, how did you fix it? Thanks, in advance.


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