Buzzzzzing Transformers

In case anybody cares, I fixed the fizzy noise in my PS Model 2 amp. It was one of the input section transistors. Now the DC offset is 0 only with the pot turned all the way to one extreme, which is a little weird. Oh well, it seems to sound OK now anyway, and the noise is gone.

Gs5556, your post motivated me to fix a buzz in my shop stereo. One of my (1980 vintage) PS Model 2 power amps running in mono had a loose transformer mounting screw and a bad electrolytic in the input shunt R/C. A new cap and some duct seal under the transformer got rid of the hum. Now if I could just get rid of the fizzy sound that the same amp has that sounds sort of like pink noise from an FM radio with the tuner being slightly twizzled. Noisy input section transistor maybe? Thanks for any suggestions.

Tphalieros, the "loose transformer" tweak makes sense. The 60HZ vibration from the transformer was decoupled from the PC boards etc. in the amp and removed a colouration. A rubber mount system would probably have a similar but safer effect. You see this in some amps (YBA being one) or a separate box entirely for the power supply.