Vizio VW22LHDTV10T Service Manual page 21

22"LCD TV
3. No display (LED indicator green)
Check the source
OK
Check LVDS cable
OK
Check 12V power supply
OK
Check BL_ON_OFF signal
OK
Check IC801
OK
Check Q805, Q806
OK
Check PT801
OK
Check U401
OK
Check panel
Reset source
NG
Reset LVDS cable
NG
Return to "1"
NG
Check U409
NG
Replace IC801
NG
Replace Q805, Q806
NG
Replace PT801
NG
Replace main board
NG
Replace panel
21
Vizio VW22LHDTV10T