LCD TV SERVICE MANUAL - diagramas.diagram...
LCD TV SERVICE MANUAL - diagramas.diagram...
LCD TV SERVICE MANUAL - diagramas.diagram...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
18. No Sound<br />
Symptom<br />
LED is Green<br />
Screen is existent, but sound isn’t<br />
Check f ollow<br />
Set on speaker<br />
in menu<br />
Is the speaker<br />
on in menu?<br />
NO NO<br />
YES<br />
All input (mode)<br />
is no sound?<br />
YES<br />
Check the<br />
Speaker cable<br />
Is the speaker<br />
cable normal?<br />
Download the EDID data<br />
Only HDMI is<br />
no Sound?<br />
Copyright © 2007 LG Electronics. Inc. All right reserved.<br />
Only for training and service purposes<br />
NO<br />
NO<br />
YES<br />
YES<br />
Replace IC400<br />
IC400 operate<br />
normally?<br />
Replace IC300<br />
Is the output<br />
of IC300(pin52,53)<br />
normal?<br />
Only AV input is<br />
no Sound?<br />
NO<br />
NO<br />
NO<br />
- 22 -<br />
YES<br />
YES<br />
Replace IC401<br />
IC401 operate<br />
normally?<br />
Check the signal<br />
after IC300<br />
refer to circuit <strong>diagram</strong><br />
YES<br />
NO<br />
YES<br />
Replace IC402<br />
IC402 operate<br />
normally?<br />
Check the Tuner In/Out<br />
Only RF is<br />
no Sound?<br />
NO<br />
NO<br />
YES<br />
Replace VSC B/D<br />
LGE Internal Use Only
Change language