Vizio VW22LHDTV10T Service Manual page 22

22"LCD TV
4. Abnormal display
Check the source
OK
Check signal filter circuit
OK
OK
Check U406
OK
Check U401
OK
Check panel
NG
Reset source
NG
Replace the filter or inductance
TV signal
HDMI signal
NG
Replace U406
NG
Replace main board
NG
Replace panel
22
Check TV system setup
OK
Check TU202
Check U502, U503
Vizio VW22LHDTV10T
NG
Replace TU202
NG
Replace U502, U503