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2.2 Fault flow chart
Fault sympton:
- No start up
- Standby light = No light
Possible causes:
- Missing mains supply
- defect Beo4
- Blown fuse in PCB4 Power supply
- PCB IR/Autocontrast defect
- Faults in main Chassis
Confirm the Mains
supply is connected
and applied
Mains is applied
- - - - - - - -
Mains supply
applied
Connect
Mains supply
Fuse on PCB4 OK?
- - - - - - - -
Fuse on PCB4
Replace
Main chassis
(module 999)
- - - - - - - -
Fault in the
TV
Confirm 5V DC on
PCB0, P33, Pin
Replace
Main chassis
(module 999)
Replace PCB/
IR/Autocontrast
Replace
Main chassis
(module 999)
No
Yes
Replace fuse on
PCB4
TV OK?
- - - - - - - -
Fuse on PCB4
Note
Ground = Chassis, heat sinks and metal covers
(Except on the HOT-side of the power supply)
ABO-CENTER
v/HENRIKSENS
ELEKTRONIK