3. W
hole light (No picture. No sound. Backlight regular)
Yes
Check POWER transformer HD-30534 commutate voltage
output r5V
、
+16V
、
-16V
、
+24V or 30 V)
0.8V above
0.5V-0.7V
No
Check Screen arrange 1
f16V 12 footsie
-16V 29,30,31,32 footsie
+5V regular(Yes/No)
Check
Transformercomm
utate diode regular
Check and change
current Power
3518
checkmainboar
d 3 footsie
complex
inphase regular
Checking
Power supply
parts
Check and
change
commutate
output
Change
parts
Check and
change
3518 and
periphery parts
Check and
change Power
supply current
Resistance
10
Ω
Check 3Y26A 48 footsie
complex insphase regular
(Yes/No)
Checking and change screen and arrange 16,20
screen scanning to control circuit parts
Check and change
Power supply
current
Check 3Y26A 2 footsie complex inphase 4.8V(Yes/No)
Check and change 3Y26A
Checking IC4011 13 footsie complex insphase regular(Yes/No)
Check and change 13
footsie buck parts
Checking ICM61260 11 footse 5 footsie ,in phase
signal output (Yes/ No)
Check and change
IC4011
Check ICM61260 12,44 12V 3.4.39.40 footsie 5V(Yes/No)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
Yes No
Check 3158’5F12V
regular (Yes/No)
Check Power supply
circuit
Check and change
ICM61260
