Bush A632N - Troubleshooting Flowcharts; No Picture Troubleshooting

25
5. Repair Flow Chart
No Picture (LED Orange)
Abnormal Display
Check TV system setup
Reset source
NG
Replace the filter or resistance
RF signal
Check Tuner
Replace Tuner
Check LVDS cable
Check input
Replace LVDS cable
Check panel
Replace panel
OK
OK
NG
OK
OK
NG
OK
OK
NG
OK
Check signal filter circuit
Check the source
C
hange key board
/
IR board
Check U400
Change U4
00
Check key board/IR board
No picture
OK
NG
OK
NG
Check 24V power supply
OK
Check the power supply
NG
Check main board standby power Check CN100
OK
NG
Check I
2
C bus
Check I
2
C
NG
OK