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3. Whole light (No picture. No sound. Backlight regular)
Yes
Check Screen arrange 1
footsie +16V 12 footsie
-16V 29,30,31,32 footsie
+5V regular(Yes/No)
Yes
No
Checkmainboard
Checking
3
footsie
Power
complex
supply
inphase
parts
regular
Check
3Y26A
48
complex
regular(Yes/No)
Yes
Check
and
change
12101 Resistance
Check and change 3Y26A
Check and change 13 footsie buck
parts
Check and change
IC 4011
Check Power transformer HD-30534 commutate
voltage output regular(+5V +16V -16V +24V or
0.5V-0.7V
Check
Transformercommutae
diode
Yes
Check
commutate output
loading
No
footsie
Check and change screen and arrange
insphase
16,20 screen scanning to control
circuit parts
Check 3Y26A 2 footsie complex inphase 4.8V(Yes/No)
Yes
Check IC4011 13 footsie complex insphase regular(Yes/No)
Check ICM61260 12,44 12V 3.4.39.40 footsie 5V(Yes/No)
Check and change ICM61260
0.8V above
Check
change
regular
Power 3518
No
and
change
Change
parts
Yes
No
No
Yes
Check ICM61260 11 footse 5 footsie ,in phase
signal output (Yes/ No)
Yes
NO
and
Check 3158'5Footsie +12V
current
regular (Yes/No)
Yes
Check and
change
3518
and
periphery
parts
No
No
Yes
No
Check Power supply circuit
No
Check
and
change Power
supply current
Resistance
10
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