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Old 10th Feb 2019, 10:09 pm   #13
bill knox
Hexode
 
Join Date: Mar 2011
Location: Wilstead, Bedfordshire, UK.
Posts: 367
Default Re: Yamaha CLP411 Electronic Piano

Hi All

Right, had a look at the Yamaha and I am quite convinced that the fault is not an audio fault but a power supply problem.

With a hair dryer and an can of freezer I could not replicate the fault at all but by prodding around the RHS of the heat sink the fault could be made apparent quite easily, as I have said, my granddaughter has an exam that she is practising for on March 3rd so I will investigate further then but I am quite certain that the problem is a dry joint around the first power regulator, I will keep you informed as I go.

Bill
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