Music sensing circuit of ML Clarity Power Supply

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neil5m

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Hey Guys

Hope you'll are keeping safe. I need help with my ML Clarity's. The speakers have a music sensing circuit within their Power Supply. The circuit switches on the blue LED and panel when the music plays and switches off the panel about 3 mins after the music stops. One of the speaker panels continues to remain charged and does not shut off even after the music stops. The blue light remains on. I assume something has gone wrong in the sensing circuit of the Power Supply. Would there be a way to check what has happened. Only one speaker has the issue. The other one is fine. Is there a way to check both boards. If one component has gone bad, I could then solder another one in if i had the component details.

Here is a picture of the schematic and the actual PS. I have a multimeter.

Appreciated!
Neil
 

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