THOMSON DTH175EL - Servicing Procedures; Power Supply Trouble Service Flow Chart

THOMSON DTH175EL Service Manual
Servicing Procedures
Power Supply Trouble Service Flow Chart
Power Supply
Block Trouble
NG
Check F901 Condition Replace F901
OK
Check U901 NG
Pin1/Pin2 Replace U901
Condition
OK
Check on D101/D102/
D103/D104/D105
Output Voltage Condition
NG
Check on Q103 Pin1
NG
Replace Q103
Voltage Condition 2~5V
NG
NG
Replace U902 Replace TR901
OK
OK
Check CON1/2
Output Voltage