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How to repair lg 22"led tv freezing picture.
LG 22"LED TV
MODEL:22LB452A-TB
PANEL:12V
PROBLEM:FREEZING PICTURE
SOLUTION:
1.Check panel supply voltage------ok.
2.Check VGL voltage-------ok.
3,Check VGH voltage------ok.
4.Check voltage dc to dc & level shifter ic(SM4053--) pin No.46-----voltage continue repeated -4.9V & 27V.When voltage -4.9V,picture is playing.This is VGH even voltage.But when voltage 27V,then picture is freezing problem.
5.Check voltage dc to dc & level shifter ic(SM4053--) pin No.47-----voltage cotinue repeated -4.9V & 27V. When voltage 27V,picture is playing.This VGH odd voltage.But when voltage -4.9,then picture is freezing problem.
6.Pin 46 VGH even and pin 47 VGH odd.
7.Cut track lines pin No.46 & 47.
8.Add jumper wire VGH odd to VGH voltage.
9.Add jumper wire VGH even to VGL voltage.
10.Then----------