Philips Magnavox 15MF400T/37 Service Manual page 22

15" LCD-TV Color Monitor
Check power Vcc
Yes
Check Led work normal?
Yes
Check U402 Pin3 is high voltage
Yes
Check inverter is high voltage
No
Press On/off
key Led have
changed from
off to green
Check U201 Decoder Vcc
Check V-chip U301 Vcc
Yes
Check tuner board is ok?
Yes
USE RS232
Check Decoder =1?
Scaler=1?
V-chip=1?
Yes
If anyone =0, replace it
22
15MF400T/37
No
Check tuner board