Hi
This is my first post, but I've been hiding in the shadows. This is a great forum!
So... Ive put together this AB763 Super Reverb clone that I got from [deleted at OP's request], basically a Mojo kit. Very good quality. Fired her up, and there is sound, but very low, like that of an altoids can amp. Also very distorted.
Ive checked and rechecked all of my connections and everything seems in order, but some of the voltages are very high!
The 4th preamp tube from the right (v2b? maybe?) has 358v on pins 1 & 6 where fenders layout shows 270v.
Then the 5th tube, 12ax7, has 459v on pin1, 0v on pin3, and 408 on pin6. They show 280v, 2.5v, and 280v respectively.
The next 12at7 has very similar readings at pin1 is 453v, 15v on pin3, and 450 on pin 6. Fender shows 230 on 1, 106 on 3, and 230 on 6.
All the rest of the voltages seem fine including the cap board. I just cant seem to find the problem. Im hoping someone recognizes something here and sorry for the extended post. Thanks for all the useful info obtained by flipping through this forum, and thanks in advance for anyone with any feedback.
Red
This is my first post, but I've been hiding in the shadows. This is a great forum!
So... Ive put together this AB763 Super Reverb clone that I got from [deleted at OP's request], basically a Mojo kit. Very good quality. Fired her up, and there is sound, but very low, like that of an altoids can amp. Also very distorted.
Ive checked and rechecked all of my connections and everything seems in order, but some of the voltages are very high!
The 4th preamp tube from the right (v2b? maybe?) has 358v on pins 1 & 6 where fenders layout shows 270v.
Then the 5th tube, 12ax7, has 459v on pin1, 0v on pin3, and 408 on pin6. They show 280v, 2.5v, and 280v respectively.
The next 12at7 has very similar readings at pin1 is 453v, 15v on pin3, and 450 on pin 6. Fender shows 230 on 1, 106 on 3, and 230 on 6.
All the rest of the voltages seem fine including the cap board. I just cant seem to find the problem. Im hoping someone recognizes something here and sorry for the extended post. Thanks for all the useful info obtained by flipping through this forum, and thanks in advance for anyone with any feedback.
Red
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