Coax In Does Not Work - Philips HTB5540D/12 Service Manual

COAX in does not work

COAX in does
not work
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Check voltage at U27 PIN6/PIN23: 3.3V on
Main Board whether normal or not
Yes
Check Main Board U27 CS8416 PIN3 input
signal whether normal or not
Yes
Check U27 CS8416 whether broken
Yes
Replace U27 CS8416
5-10
No
Check power supply circuit.
No
Check Main Board C360, L11
No
or not
Check Main Board U8
Trouble shooting Chart