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I'm tinkering around with a peavey 6505 combo thats having severe volume loss issues. It's a huge PITA to get the circuit board out so I'm curious if anyone has anyone experience with peavey 5150/6505 amps.
I'd read a bunch about issues with the effects loop jacks but I think I've got the problem isolated to the preamp. The plugging a guitar into the effects return gives plenty of volume and the power tube voltages all look in the right place. I've easter egged preamp tubes to no avail so far. There are some filter caps that are looking worse for wear but the b+ seems to measure in the right range on the preamp filters so I don't think that's the issue.
I'm going to take voltage measurements at the preamp sockets to see if that yields any insight before I commit to going through the challenge of getting the board out.
Thanks in advance
I'd read a bunch about issues with the effects loop jacks but I think I've got the problem isolated to the preamp. The plugging a guitar into the effects return gives plenty of volume and the power tube voltages all look in the right place. I've easter egged preamp tubes to no avail so far. There are some filter caps that are looking worse for wear but the b+ seems to measure in the right range on the preamp filters so I don't think that's the issue.
I'm going to take voltage measurements at the preamp sockets to see if that yields any insight before I commit to going through the challenge of getting the board out.
Thanks in advance