I have that princeton reverb on the bench and tried to save as many parts as possible but over 90% of the Board is new. While forming the caps last night it made it to about 70volts before blowing the fuse. I would usually suspect that to be filter cap or tube related but the can cap is new and tested good it's hard to mess up a 20mfd x 4 can cap. All grounds test good. My thought is... I didn't have a spare 1amp fuse with in reach ( packed away ) so i tested the original for continuity and put it back in. so it's possible it was going bad and just hanging on by a thread and then just gave way. I haven't put tubes in at this point. I'm a bit turned around on the speaker OT wiring on this amp whoever got in it before me botched it up so i'm suspecting the OT is shot. The green and Black wires... Black is ground and jumpered to the switching wiper? the green is possitive/hot? the yellow wire is the feed/flyback... the schematic in the chassis is pretty worthless from age.
I'm planning on going back and rechecking all the wiring again but who knows i may have over looked something i was tired.
blowing fuses!!!
Moderators: pompeiisneaks, Colossal
blowing fuses!!!
My Daughter Build Stone Henge
Re: blowing fuses!!!
it's a blown output transformer... at least it's only $45 and easy to find.
My Daughter Build Stone Henge