Audio Board - Philips Magnavox 15MF400T/37 Service Manual

15" LCD-TV Color Monitor

5.5. Audio Board

Note: 1. If Replace "MAIN-BOARD" , Please re-do "DDC-content" programmed & "WHITE-Balance".
2. If Replace " POWER-BOARD INVERTER" only, Please re-do " WHITE-Balance"
Check
CN103 input
Yes
Check C202,
C203
Yes
Check C643,
C644, R625,
R626
Yes
Check U605
C672, C671
Yes
Check C627,
C630, R613,
R615
Yes
Check U601
Pin2, 5,19,16
Output
Yes
Check
CN117
Replace speaker
No
Check audio input signal
No
Replace C202, C203
No
Check U605 Vcc or
Replace C672, C671, U605
No
Replace C627,
C630, R613,
No
Check U601 Vcc or
Replace U601
No
Replace CN117
25
15MF400T/37