LG GR-B277, Service Manual

Page: 118 / 134

5. TROUBLESHOOTING
5-1. General
5-2. TV
5-3. FM Radio
TV-RADIO
- 118 -
No. Poor Symptoms Adjustment
1
2
No Picture
Poor Picture
1) No P1, P51, P52, P53, P54 connector
2) Poor TV Main PCB
1) Poor LCD Lamp
2) LCD Connector
1) Check P1 connector and switched on
2) Change the TV Main PCB
1) Change the LCD
2) Check connector and switched on
No. Poor Symptoms Adjustment
1
2
No Sound
Poor Display LCD
1) Poor FM Radio Tuner
1) Poor Text Display
2) No Backlight
1) Charge FM Radio Tuner.
1, 2) Charge FM Radio LCD ASSEMBLY
& Check Connector
No. Poor Symptoms Adjustment
1
2
3
4
5
No Sound
Poor Radiant heat
Fan
No TV broadcast
Button does not
work
Remote Control
does not work
1) No P601, P602 connector
2) Poor speaker
3) Poor TV Main PCB
1) Fan turning abrades wire and tape.
2) Poor Fan
1) No TV connection
(Hinge Cover, Back TV)
1) No P101 connector
2) Poor switch
1) No P101 connector
2) Poor Remote Control sensor
3) Poor Remote Control
1) Check connector and switched on
2) Change the speaker
3) Change the TV Main PCB
1) Detach Fan and remove the
interference.
2) Change the Fan
1) Check connection and switch on
1) Check connector and switch on
2) Change the Button PCB
1) Check connector and switched on
2) Change the Button PCB
3) Change the Remote Control