A output transformer recently failed (McIntosh MA-230) and so far the only shop I found who said they could rewind it wants far too much for the task.
After all it's only a few hundred feet of wire right?
I'm thinking worse case, I could carefully dissassemble the transformer, mark the parts to insure an orderly reammembly,
remove the core and unwind it until I find the failed winding, or just replace everything and start new.
I'll need to build a jig with a turn counter and secure a source for the enameled wire. Pretty simple if you ask me. So why is this guy asking $600 for the job? It's a pretty basic transformer with 4 or 5 separate windings, but nothing really special.
Is there something they didn't teach us in basic electronics?
in amplifiers, an output tube going gassy, cathode bypass cap shorting, or an internal problem causing the tube to go into full conduction can cause a transformer to burn out. also, running the amp without a speaker connected can cause internal breakdown of the transformer.If the old one failed, it likely failed for a reason.