LED TV Backlight Inverter Protection
LED TV backlight driver board circuit bypassing is required when there is some minor issue in the led backlights during the repair of LCD/LED TV or fault diagnosis. Each led backlight driver ic has a protection circuit in it that can bypass the issue and keep running the backlights. Here is below the different LED TV Backlight Driver ICs protection or bypassing methods are given for testing and easy troubleshooting purposes only.
Permanent bypassing may cause the led tv backlights to burn or the circuit to damage itself. Bypassing of the led tv inverter board circuit is for only expert technicians and the bypassing procedure given below is for educational purposes only. If you are not a technician then do not play with the board or not try to bypass it.
Note: It is very necessary after successful repairing restore the protection of the backlight driver circuit for the smooth working/operation of LCD/LED TV.
You should first download the datasheet of drive ic and then find the signal pin which needs to bypass to remove or disable the protection. The signal pin name may be as the following:
TIMER, OVP, SST, CMP, FT, SCP, CP, CT
Here are below the collection of LCD-LED Backlight Driver IC Protection bypass Methods that are collected from the expert technicians. Special thanks to all of those who make it easy for juniors. Kazmi Elecom Team is not responsible for any type of damage/loss in case of practical. Please check the datasheet to confirm and then take guidance by the following methods at your own risk.
LED TV Backlight Inverter Protection Method:
A:
- AS339M-G1 pin 4 47k
- AAT1100 pin 8 short
- AAT1107 pin 15 short
- AT1380 short pin 2
- AT1741 short pin 15
B:
- BA9741 short pin 15 or LED to Ground
- BA9743 short pin 15
- BD8779EFV pin 34 LED to Ground
- BD9211F pin 14 4.7k
- BD9247F pin 11 10K
- BD9215AFV pin 15 10k
- BD9222FV pin 13 LED to Ground
- BD9240 pin 15 10k
- BD9247 pin 11 10k
- BD9262 pin 25 10k
- BD9270F pin 13 10K
- BD9275F pin 11 1k
- BD9276EFV Pin 35 LED to Ground
- BD9397EFV pin 31 10k
- BD9486 pin 5 10k
- BD9766CVF pin 20 LED to Ground
- BD9766VF pin 20 LED to Ground
- BD9777 pin 14 10k Ground
- BD9882F pin 14 LED to Ground
- BD9883FV pin 12
- BD9884 short pin17 and pin 18 and ground the capacitance
- BD9884FV pin 21 LED to Ground
- BD9893F pin 10 82k
- BD9896 pin 3 LED to Ground
- BD9897F pin 22 LED to Ground
- BD9897FS pin 17 LED to Ground
- BIT3101 pin 2 and pin 15 short
- BIT3101A pin 16 470 ohm
- BIT3102 Cavitate pin 5
- BIT3102B pin 14 47k
- BIT3105 Cavitate pin 4
- BIT3105 pin 19 LED to Ground
- BIT3106 Cavitate pin 4 and pin 27
- BIT3107 Cavitate pin 4
- BIT3193 Cavitate pin 15 pin 3
- BIT3193G pin 5 LED to Ground
- BIT3195 Break Protection Apply LED to Ground to pin 5 and Ground
- BIT3251 pin 5 to Ground
- BIT3252 pin 5 to Ground
- BLT3713 pin 5 LED to Ground
- BD9219FV pin 22 to 10k
D:
- DDA009 pin 18 3v
- DT8211 pin 9 100 ohm
- DT8211A pin 9 47k
E:
- EC5462 pin 2 2.2k
F:
- FA3629 short external capacitor over pin 15 and pin 16
- FA3630 short pin 7 and pin 10
- FAN7311 pin 1 560 ohm
- FAN7314 pin 1 560 ohm
- FAN7316 pin 17 LED to Ground
- FAN7547 pin 7 to Ground
G:
- GB98AERN pin 6
I:
- ILN816GN pin 8 10K
- INL837GL pin 14 Diode
K:
- KA7500 short pin 1 and pin 16
- KA7500B Short pin 15 and pin16
- KHO803A pin 5 LED to Ground
LED TV Backlight Inverter Protection
LED TV Backlight Inverter Protection
L:
- LM2901 pin 6 82k
- LX1691A pin 14 OP-SNS
- LX1692 C_TO 1uF to Ground
M:
- MAX8722 pin 4 to Ground
- MP3389 pin 6
- MP1006 pin 6 10k
- MP1007E pin 4 to Ground
- MP1008 pin 4 10k
- MP1009 pin 5
- MP1027EF pin 16 to Ground
- MP1038 pin 6 10k
- MP1038EY pin 6 LED
- MP1060E pin 3 LED to Ground
- MP10072 pin 3 LED to Ground
- MP1972 pin 15 10k
- MB3775 short pin 15
- MP3810 pin 6 82k
- MP1038EY connecting wire pin 11 and pin 2
- MAP3204C pin 3 10k
- MSC1692 pin 4 220k
O:
- OB3302CP pin 2 LED 3V
- OB3309 pin 15 LED
- OB3350 pin 6 470k
- OB3362RP pin 16 20k
- OB3368AP pin 17 180k
- OZ5508G pin 3 LED to Ground
- OZ5508GN pin 3 LED to Ground
- OZ9937 pin 11 1k
- OZ9937GN pin 14 47k
- OZ960 short pin 2
- OZ960 pin 4 LED to Ground
- OZ961 pin 2 stg
- OZ9611S pin 3 47k
- OZ964 pin 4 LED to Ground
- OZ9643 pin 1 20k
- OZ962 short pin 2
- OZ964 short pin 2
- OZ965 short pin 4 and pin 6
- OZ965 pin 4&5 short
- OZ972GN pin 8 10k
- OZ9910 pin 5 82k
- OZ9919GN pin 8 10k
- OZ9928 pin 28 pin 29 10k
- OZ9RR short pin 8 and pin 9
- OZ1060 short pin 2
- OZ9937 pin 14 47k
- OZ9938 pin 3 10k
- OZ9938
- pin 3 short
- pin 6 short
- pin 7 short to Ground. Remove the grounding resistance to remove protection.
- OZ9938GN pin 3
- OZ9938Q pin 3 10k
- OZ9939GN pin 3 100k
- OZ9966SN pin 15 10k
- OZ9972 pin 20 1k
- OZ9976 pin 11 10k
- OZL68GN pin 4 LED to Ground
- OZL68GN pin 4 and pin 7 short
- OZT1060GN pin 1 LED to Ground
S:
- SAQ8818 1M resistor with 12v
- SEM2005 pin 1 LED to Ground
- SEM2005 pin 1 82k
- SEM2006 pin 5
- SEM2105 pin 1 LED to Ground
- SEM2107 pin 21 LED to Ground
- SS1091SN pin 23 10k
- SS1091ASN pin 19 LED to Ground
- SP5005 pin 5 LED
- SP5001Q pin 19 LED
- SSL100SN pin 19 4.7k
T:
- TA9687GN pin 12 47k
- TL1451 pin 15 to Ground
- TL494 short pin 1 and pin 16. If not work, short pin 4 to the Ground.
- TL5001 short pin 5
- TL5451 short pin 15
- TPS61197 pin 6 10k
U:
- UBA2070 pin 1 to Ground
- UBA2071AT pin 5 to Ground
- UBA2074 pin 6 20k
CRT TV Protection:
CRT TV has also the protection bypassing option but the methods are different. Please see the details in the following CRT TV Protection Methods file. Thanks to all masters who have saved the information data with pictures to support junior technicians.
Click and Download the above link files and then extract any one of them you will get the folder.
LED TV Backlight Inverter Protection
LED TV Backlight Inverter Protection
LED TV Backlight Inverter Protection
LED TV Backlight Inverter Protection
LED TV Backlight Inverter Protection
