Philips 37TA1800/93 Service Manual page 61

8.4 Repair Flow Chart
1.No work/LED is off
Check if
power switch is
normal
Yes
Check
power board 1089
pin1,2=16V,pin3=24V,
pin4=1.8V,pin5=
4.6V
Yes
Check IR board cn001
pin1=3.3V,pin3=3.1V,
pin4=0.4V,pin5=3.3V,
pin6=3.3V
2.No raster/picture too
dim
Check
power board 1088,
pin1~5=24V,pin6=
2.6V pin7=6.1V
Yes
Check
power board 1089
pin1,2=16V,pin3=24V,
pin4=2.6V,pin5=
6.1V
Yes
Check scaler board
8. Circuit Descriptions and IC Data sheets
No
Replace Power switch
No
Check power board
No
Check power board
No
Check power board
3.No picture/LED is green
Check
power board 1088,
No
pin1~5=24V,pin6=
2.6V pin7=6.1V
Yes
Check if
No
working voltage
R240,R241,R242,
R243=3.3V
Yes
No
Check if clock
source X101
Yes
Check if
U110 RGB,
No
clk,H/V and DE signal
output 128 bits
TTL
Yes
Check
No
resistors-network
Yes
Replace LVDS cable
Yes
Replace LCD panel
TPT1.0A LA 61
Check power board
Check circuit around
each regulator and
eliminate short and
open situation
Replace X101
Try to replace
flash Rom
EEPROM
Replace bad resistors-
network