Vizio VW22LHDTV10T - Repair Flowcharts; Troubleshooting: No Power (No LED); Troubleshooting: Cannot Start (Yellow LED)

22″LCD TV Vizio VW22LHDTV10T
20
5. Repair Flow Chart
1. No Power (No LED indicator)
2. Can not start (LED indicator yellow)
NG
Check power cord and board interface
Plug in power cord and interface
OK
Check F901, BD901, C905
NG
Replace F901 or BD901 or C905
OK
Check IC901, Q901
Check D904, D906
NG
Replace IC901 or Q901
OK
Check T901
OK
Replace T901
Replace D904 or D906
OK
NG
NG
Check ZD920
NG
Replace ZD920
NG
Re
p
air the ke
y
board
OK
Check 5V SB
NG
Return to “1”
OK
Check PWR ON si
g
nal
NG
Check U409
,
Q706
,
0704
NG
Replace U409 or Q706 or
Q704
Check I
2
C communication
OK
Check U401
,
U402
NG
Re
p
lace the main board
OK
OK
Check main board
p
ower su
pp
l
y
p
art
Check ke
y
board
Check I
2
C communication
OK
Check 3.3V SB
NG
Check U706