Art,
You know something is shorted. It might produce further damage to blow
another set of fuses. It is not good to continually attempt to use a
failed high power amplifier.
A power supply and all its components are pretty easy to check with the
unit powered off.
Check the transformer and choke for shorts to frame.
Check capacitors after discharging for shorts with ohm meter. Check
diodes with diode range of DMM if solid state.
Tube diodes can be checked for shorts with an ohm meter. (severe shorts
like cathode to plate).
You may have to disconnect wires at terminal strips to facilitate
isolated tests.
Make a diagram of any connections you have to take loose, before you
unsolder. Helps if you have to interupt your troubleshooting and resume
later.
73 and GL,
Stuart Rohre
K5KVH
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