Sony HCD-RG440 crackle

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Joined 2011
Then poke around on the board with a pencil or other insulated tool,
and look for sensitive areas in the audio circuits (not the RF area).
If you find one, try resoldering that area.

Is the noise there even with the volume at minimum?
If so, the problem is after the volume control.
There's an awful lot of parts in there, hope you're more patient than I am.
 

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