LG 50PG6300 Service Manual page 32

16. No Sound – DTV Input
- Check the condition of the RF cable connection.
- Check the system clock (27MHZ,Y171) and the Voltage of VCTP_P(U81)
- Check the system clock (4MHZ, Y716) and the Voltage of Mojo(U662)
Copyrightⓒ2008 LG Electronics. Inc. All right reserved
Only for training and service purposes
No Sound
Pass
Check +3.3V, +1.2V of U932,U935
Pass
Check the signal(TS_data, clk, str)
of U612
Pass
Check the signal(data,clk,str,cavld)
of U662
Pass
Check the signal
of U916
Pass
Repeat D Process
Pass
Check input source cable or Tuner(U661)
Fail
Fail
Fail
Fail
­32­
Re-soldering or Change the
defect part(U932,U935)
Re-soldering or Change the
defect part(U661)
Re-soldering or Change the
defect part(U612)
Re-soldering or Change the
defect part(U662,U916)
LGE Internal Use Only