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Posted By: Jeff Joseph Diagnosing my Yamaha MX-100A - 06/16/15 12:19 PM
Hello,

I'm trying to diagnose my Yamaha MX-100A - does anyone have a copy of the service manual for that early disklavier? It has been blowing the 7A fuse in the power supply. Replacing the fuse restores function but after a few days or weeks it blows again and the piano is silent. There's nothing obvious from a visual inspection of the power supply (no bulging caps or signs of heat) IS there a common failure mode for this piano?

thanks

Jeff
Posted By: Muelerama Re: Diagnosing my Yamaha MX-100A - 06/24/20 10:33 AM
Did you manage to obtain a copy of the service manual?
Cheers
Jeremy
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