Re: TV Repair Reference Library
How to by pass LCD screen protection?
Screen Black (no display) failure usually encounter some display only one lamp or circuit protection. For easy troubleshooting , we need to remove (by pass) the protection.
OZ9938 remove protection circuit:
1. pin 3 short to ground
2. pin 6 short to ground
3. pin 7 short to ground, remove the grounding resistance ,to remove protection.
MP1038EY connecting wire pin 11 and pin 2 ,to remove protection.
TL5001 short pin 5 to ground ,to remove protection.
TL1451 short pin 15 to ground, to remove protection.
TL5451 short pin 15 to ground, to remove protection.
BA9741 short pin 15 to ground, to remove protection.
BA9743 short pin 15 to ground, to remove protection.
MB3775 short pin 15 to ground, to remove protection.
AT1741 short pin 15 to ground, to remove protection.
AT1380 short pin 2 to ground, to remove protection.
KA7500 short pin 1 and pin 16 to ground, to remove protection.
TL494 short pin 1 and pin 16 to ground. IF not work, short pin 4 to ground.
FA3629 short external capacitor over pin 15 and pin 16
FA3630 short pin 7 and pin 10 to ground, to remove protection.
OZ960 OZ962 short pin 2 to ground, to remove protection.
OZ965 short pin 4 and pin 6 to ground, to remove protection.
OZ9RR short pin 8 and pin 9 to ground, to remove protection.
BIT3101 Cavitate pin 2 and pin 15 pins (suck out the solder, let the pins float.)
BIT3102 Cavitate pin 5
BIT3105 Cavitate pin 4
BIT3106 Cavitate pin 4 and pin 27
BIT3107 Cavitate pin 4
BIT3193 Cavitate pin 15 pin 3
AAT1100 pin 8 short to ground, to remove protection.
AAT1107 pin 15 short to ground, to remove protection.
BD9884 short pin17 and pin 18 on the ground capacitance.
Can someone use spreadsheet make it better?
How to by pass LCD screen protection?
Screen Black (no display) failure usually encounter some display only one lamp or circuit protection. For easy troubleshooting , we need to remove (by pass) the protection.
OZ9938 remove protection circuit:
1. pin 3 short to ground
2. pin 6 short to ground
3. pin 7 short to ground, remove the grounding resistance ,to remove protection.
MP1038EY connecting wire pin 11 and pin 2 ,to remove protection.
TL5001 short pin 5 to ground ,to remove protection.
TL1451 short pin 15 to ground, to remove protection.
TL5451 short pin 15 to ground, to remove protection.
BA9741 short pin 15 to ground, to remove protection.
BA9743 short pin 15 to ground, to remove protection.
MB3775 short pin 15 to ground, to remove protection.
AT1741 short pin 15 to ground, to remove protection.
AT1380 short pin 2 to ground, to remove protection.
KA7500 short pin 1 and pin 16 to ground, to remove protection.
TL494 short pin 1 and pin 16 to ground. IF not work, short pin 4 to ground.
FA3629 short external capacitor over pin 15 and pin 16
FA3630 short pin 7 and pin 10 to ground, to remove protection.
OZ960 OZ962 short pin 2 to ground, to remove protection.
OZ965 short pin 4 and pin 6 to ground, to remove protection.
OZ9RR short pin 8 and pin 9 to ground, to remove protection.
BIT3101 Cavitate pin 2 and pin 15 pins (suck out the solder, let the pins float.)
BIT3102 Cavitate pin 5
BIT3105 Cavitate pin 4
BIT3106 Cavitate pin 4 and pin 27
BIT3107 Cavitate pin 4
BIT3193 Cavitate pin 15 pin 3
AAT1100 pin 8 short to ground, to remove protection.
AAT1107 pin 15 short to ground, to remove protection.
BD9884 short pin17 and pin 18 on the ground capacitance.
Can someone use spreadsheet make it better?
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