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Old 11th Aug 2018, 9:30 pm   #13
'LIVEWIRE?'
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Join Date: Mar 2006
Location: N.W. Oxfordshire(Chipping Norton)
Posts: 7,306
Default Re: Marshall JTM45 Guitar Amplifier- Mains (Primary)Fuse Blows

After I've had a chance to check the amp. further, sometime on Monday, I should know what is at fault. In the meantime, Ed, what would you charge to rewind the mains transformer? New ones are around the £100 mark on different sites I've checked.

B.t.w., Lawrence, I only mentioned Bias, because I'd been given a message from the owner about the Bias, but didn't know exactly what he meant. After almost 50 years repairing electronic gear I know that grids should be negative w.r.t. cathodes. Perhaps the owner, to whom I haven't spoken personally, suspects there may be a fault in that part of the circuit.
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