Repair Flow Chart - Philips TFT LCD Colour Monitor Service Manual

31 190B4 LCD
PI Board
(Power + Inverter)
Inverter board
Fluorescent Lamp

Repair Flow Chart

Block Diagram
Power supply board
12V DC
IF Board, 2.5V/3.3V/5V
720Vrms
LCD panel
No power (Power
indicator off)
2.5V/3.3V/5V DC
Check KEY Board
Check IF Board
AC IN
12V
+ 5V
No
Check 12V
Yes
No
Check
Yes
KEY Board
Power supply board
(Bad AC adapter)
IF Board