LG 50PG6300 Service Manual page 27

11. No Sound – PC Input
- Check the condition of the PC cable connection.
- Check the system clock (27MHZ,Y171) and the Voltage of VCTP_P(U81)
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Only for training and service purposes
No Sound
Pass
Check the signal(R,L)
of U211
Pass
Repeat D Process
Pass
Check input source cable or Jack(JP377)
Fail
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Re-soldering or Change the
defect part(U211)
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