Power Transformer Blown?

[Tim C.]

My 5E3 is blowing fuses. I removed the 6V6's and it still blew the fuse. I removed the 6V6's and 5Y3 and it still blows fuses. My amp has a standby and the fuse is blowing before I even engage the standby. I am assuming the only things left are a bad power tranny or a filter cap. Any thoughts?

Thanks,
Tim C.

[MWJB]

"I am assuming the only things left are a bad power tranny or a filter cap. Any thoughts?" It could only be a bad main filter cap if the filter cap connects to the hot side of the standby switch?

Check for shorts in the heater wiring.

Disconnect & isolate ALL primaries, if it still blows fuses, then yes it's the PT.

[Tim C.]

Thanks! I'll let you know.

Tim C.

[MWJB]

I am a dufus, I mean't to say "Disconnect & isolate ALL SECONDARIES"!

Apologies.

[Tim C.]

No problem. I knew what you meant.

Thanks!!

Tim C.