Today's topic, we will explain how to remove the protection from the IC Inverter.
Before explaining the ways to raise the protection of the TV inverter, first, learn what we mean by protection and what it does in the screens.
As it is known, the inverter or card inverter is responsible for turning on the lighting background in all LED hand screens, and it is also responsible for turning on the fluorescent lamps in the LCD screens, as it is designed to convert a weak voltage into a high voltage.
And since these LCD or hand bulbs operate at a high current. The inverter has been modified by a smart IC that senses the value of the current draw and its value is set in advance by the factory. This Ic works to sense the value of the draw; If there is a short circuit or defect in the inverter Board or a problem with the lamps or their shoes, it works to cut off the current from the inverter, and this is what is known as the protection circuit.
How to remove the protection of the inverter :
Each inverter IC has a special protection bypass pin, which must be identified and goes by several names, including:
timer; SST; OVP; CT; CMP; FT; cp; SCP
LED & LCD BACKLIGHT PROTECTION
(DRIVE IC PIN DETAILS TIMER, OVP, SST, CMP, FT, SCP)
To bypass the inverter's protection, we connect a light LED or resistance with the protection pin with the ground, and here are the protection pins for most of the inverter chips:
AT1741 --->pin 15 -LED GROUND
BA9741--->pin 15 -LED GROUND
BD9211F--->pin 14-4k7 GROUND
BD9215AFV --->PIN 15 -10K GROUND
BD9222FV ---> PIN 13 -LED GROUND
BD9240--->PIN 15 - 10K GROUND
BD9270F--> PIN 13-10K GROUND
BD9275F---> pin 11-1K GROUND
BD9276EFV---> PIN 35-LED GROUND
BD9766CVF ---> PIN 20 -LED GROUND
BD9766VF ---> PIN 20-LED GROUND
BD9777---> PIN 14 -10K GROUND
BD9882F---> PIN14 -LED GROUND
BD9893F---> PIN 10 -82K GROUND
BD9896---> PIN 3-LED GROUND
BD9897F---> PIN 22-LED GROUND
BD9897FS---> pin 17-LED GROUND
BI3101A---> pin 16 -470 Ohm Ground
BIT 3101---> pin 2&15 SHORT
BIT3102B---> pin 14 -47K Ground
BIT3105---> pin 19 -LED Ground
BIT3193--> pin 5 -LED Ground
BIT3251/52---> pin 5 -GROUND
BIT3713 ---> pin 5 -LED GROUND
DT8211---> pin 9 -47K Ground
FA3629---> pin 15&16 SHORT
FA3630---> pin 7&10 SHORT
FAN7316 ---> pin 17 -LED Ground
ILN816GN---> pin 8 -10K ground
KA7500---> pin 1&16 SHORT
KA7500B---> pin 15&16 SHORT
KHO803A--->5 -LED OR 390K ground
LM2901---> pin 6 -82K ground
MAX8722---> pin 4 -DIRECT to GROUND
MP1006---> pin 6 -10K Ground
MP1007ES---> pin 4 -DIRECT GROUND
MP1008---> pin 4 -10K GROUND
MP1009---> pin 5 -DIRECT GROUND
MP1038EY---> pin 2&11 SHORT
MP1060EF---> pin 3 -LED ground
MP3810---> pin 6 -82K ground
MSC1692---> pin 4 -220K ground
OB3316QP- --> pin 17 DIRECT GROUND
OB3362RP---> pin 16 -22K ground
OZ5508G/GN/N---> pin 3 -LED ground
OZ964---> pin 4 -LED ground
OZ9643---> pin 1 -20K ground
OZ9643N ---> pin 4 -led ground
OZ965---> pin 4&5 SHORT
OZ972GN---> pin 8 -LED ground
OZ9910---> pin 5 -82K ground
OZ9919GN---> pin 8 -10K GROUND
OZ9937---> pin 14 -47K ground
OZ9938---> pin 3 -10K ground
OZ9938GN---> pin 3 -GROUND
OZ9938Q---> pin 3 -10K GROUND
OZ9939GN---> pin 3 -100K ground
OZ9966SN---> pin 15 -10K GROUND
OZ9972(24-PIN)---> pin 20 -1K ground
OZ9976---> pin 11 -10K ground
OZL68GN---> pin 4 -LED ground
OZL68GN---> pin 4&7 SHORT
OZT1060GN---> pin 1 -LED GROUND
SEM2005---> pin 1 -LED ground
SEM2005---> pin 1 -82K ground
SEM2006---> pin 5 to GROUND
SEM2107---> pin 21 -LED ground
SS1091ASN---> pin 19 -LED ground
TA9687GN---> pin 12 -47K GROUND
TL1451---> pin 15 -DIRECT to GROUND
TL494---> pin 1&16 SHORT
And this is how the protection is lifted, and the lighting background will work, but the problem must be fixed, and we must not forget to restore the protection without any modification, to preserve the safety of the user first and the safety of the device second.
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