Repair Flow Chart; No Power (No Led Indicator); Can Not Start (Led Indicator Yellow) - Vizio VS370E Service Manual

37"LCD TV

5. Repair Flow Chart

5.1. No Power (No LED indicator)

Check power cord and board interface
OK
Check F901, BD901, C907
OK
Check IC931, Q931
OK
Check T901
OK
Check D935, C926, C928

5.2. 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 T901
NG
Replace D935 or C926 or C928
NG
Repair the key board
NG
Return to "1"
NG
Check U703
Check U411, X402
NG
Check I
NG
Replace the main board
19
Plug in power cord and interface
NG
Replace U411 or X402
2
C communication
Vizio VS370E