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kevinaston1 · 5th Feb 2019, 8:22 pm

Hi Bill.

You do not state if the popping is present on bot channels, or just one.

For both channels, it will be IC3 (uPC4570). If it confined to left or right, it will be IC 4 or 5, the output devices type AN7164.

A squirt of freezer whilst the fault is there will identify the culprit.

Kevin

5th Feb 2019, 8:22 pm	#4
kevinaston1 Hexode Join Date: Aug 2014 Location: Featherstone, West Yorkshire, UK. Posts: 386	Re: Yamaha CLP411 Electronic Piano Hi Bill. You do not state if the popping is present on bot channels, or just one. For both channels, it will be IC3 (uPC4570). If it confined to left or right, it will be IC 4 or 5, the output devices type AN7164. A squirt of freezer whilst the fault is there will identify the culprit. Kevin