Ive been trying to repair a VIZ WA-504B/44D audio generator that is misbehaving. I been tracking issues back and through the circuit and I found something on the output of the transformer(while still connected to the circuit) that I cant really explain, which Ive included below. Looking at the schematic
here , the output of the (center tapped) transformer is piped directly into a textbook example of a 2 diode full bridge rectifier, right out of "The Art of Electronics". I am at a total loss to explain the wildly asymmetric droop on the transformer output. This droop also corresponds to a strong negative bias of the generated waveforms, that can hardly get above 0v, but is pulled well below the expected -10v on the swing.
Is it possible that this is just a bad transformer? If not, what could explain such a aggressive droop.
PS. Im in USA, so this is appears to be a 120 to 240 step up transformer.