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COAX in does not work
COAX in does
not work
Go
Check voltage at U22 PIN3/PIN18:3.3V on
Main Board whether normal or not
Yes
Check Main Board U22 CS8422 PIN2
signal input whether right or not
Yes
Check U22 CS8422 whether broken.
Or not
Yes
Replace U22 CS8422
5-10
No
Refer to Power Board CN502
No
Check Main Board C355, C370, C381,
R368 ,L11,
No
Check Main Board U4
Trouble shooting Chart
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