Repair Flow Chart - Insignia NS-LCD47HD-09 Service Manual

47"LCD TV

5. Repair Flow Chart

1. No Power (No LED indicator)
Check power cord and board interface
OK
Check F901, BD901, C908
OK
Check IC902, Q901
OK
Check T901
OK
Check D907, C921, C923,
IC905, IC906
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 C908
NG
Replace IC902 or Q901
NG
Replace T901
NG
Replace D907 or C921 or C923 or
IC905 or IC906
NG
Repair the key board
NG
Return to "1"
NG
Check U703
Check U411, X402
NG
2
Check I C communication
NG
Replace the main board
Plug in power cord and interface
NG
23
Best Buy NS-LCD47HD-09
Replace U409 or X402