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Musical Fidelity A1000 Humming Issue

I have a Musical Fidelity A1000 integrated amp which lately has hum (~120 Hz) leaking from its separate power supply unit through the speakers after about 10 minutes of operation. I wonder if anyone has encountered this issue before? Also, does anyone know of a good Musical Fidelity repair shop in the LA/San Diego area? Thanks.
englong

Showing 2 responses by englong

englong OP
2 posts
 
No, the MF A1000 is a transistor amp.
englong OP
2 posts
 
No, it's a long discontinued integrated amp which is a classic. I'm actually thinking of sending in to the factory who currently is offering a fine tuning program for most of their products but am put off by the shipping costs.
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