Tube Amp Archive

no voltage pos or neg at pin 5. I did not try to bias first time. it had original tubes and i thought rectifier shorted tranny so i just replaced the rectifier tube.

OK, Now i have installed new Fender Transformer, new filter caps, all new tubes. Amp come on works good But, Using my TAD bias probe I am reading 150 mA at the power tubes. Way too hot. any suggestions

Sorry, I am new here and didn"t realize i had posted on two different post. I am in the US. 120V 60hz. I completely unhooked the transformer and connected 120 to the black and white primary wires. i have no voltage coming out of any kind. i have a new transfomer ordered and when i put it in i am goi...

Sorry, I am new here and didn"t realize i had posted on two different post. I am in the US. 120V 60hz. I completely unhooked the transformer and connected 120 to the black and white primary wires. i have no voltage coming out of any kind.

Fuse did not blow the second time either. they are the right size. Amp played great for about 2 hours before the transformer went again. seemed a little hot to me.

I have a DRRI with a blown tranny. I thought it was caused by a shorted rectifier. Did not blow either fuse. I put 120V to Primary and do not get any voltages from secondary. I replaced the power transformer, rectifier tube and the 5 large filter caps. Amp came on worked and sounded great for about ...

I have a DRRI with a blown tranny. I thought it was caused by a shorted rectifier. Did not blow either fuse. I put 120V to Primary and do not get any voltages from secondary. I replaced the power transformer, rectifier tube and the 5 large filter caps. Amp came on worked and sounded great for about ...