Tuner Board - Philips Magnavox 15MF400T/37 Service Manual

15" LCD-TV Color Monitor

5.2. Tuner board

.
U601
FB601=12V
Check CN115 Pin15, 16=5V
Pin19, 20=12V
Yes
Check U602, Q603, Q605
Power switch
U605 U605
FB607=8V FB605=5V
Use RS232 check
Tuner board=1? Ack fail?
Tuner board=0
Replace TU100
No
Check Main board U104 Pin 1,4,
CN102 DC in 12V relative circuit.
TU100 TU100
FB613=5V FB612=5V
Ack fail
Replace U605
23
15MF400T/37