Repair Flow Chart - WDE W3223 Service Manual

32"LCD TV

5. Repair Flow Chart

1. No Power (No LED indicator)
Check power cord and board interface
OK
Check F901, BD901, C907
OK
Check IC931, Q931
OK
Check T931
OK
Check D935, C926, C928
2. Can not start (LED indicator yellow)
Check key board
OK
Check 5V SB
OK
Check 3.3V SB
OK
Check PWR ON signal
OK
Check main board power supply part
OK
Check U401, U402
OK
2
Check I C communication
NG
NG
Replace F901 or BD901 or C907
NG
Replace IC931 or Q931
NG
Replace T931
NG
Replace D935 or C926 or C928
NG
Repair the key board
NG
Return to "1"
NG
Check U706
Check U409, Q706, 0704
NG
2
Check I C communication
NG
Replace the main board
Plug in power cord and interface
NG
20
WDE W3223
Replace U409 or Q706 or
Q704