Caution:
Not all methods tested journalist and can not be recommended repairers who do not have sufficient experience and theoretical knowledge.
If anyone broke and TV shows, we recommend this link: - TV not included
When repair and diagnostics, it is often necessary to check individual circuits of the inverter circuit - power converter backlight LCD panel. To make the necessary measurements sometimes fails generation breaks for various reasons, for example because Skewed loads.
Together masters and researches various repair forums were offered several options for blocking inverter protection in order to be able to diagnose.
Readers are invited to several previously published
examples of how to disable the protection of the inverter for the following ШИМ-контроллеров: AT1741 , BA9741 ,
BD9240 , BD9883 , BD9897FS , BIT3102A , BIT3193 ,
BIT3713 , INL837GL , FAN7311 , FAN7314 , KH0803A ,
LX1691A , MAX8722 , MP10072E , MP1008 , MP1009 ,
MP1027EF , MP1038 , MSC1692 , OZ960 , OZ964 ,
OZ9910GN , OZ99361 , OZ9938Q , OZ9966SN , OZT1060GN
, SEM2006 , SEM2105 , SP5005 , TA9687GN , TL1451
OZ960
To disable input SoftStart (pin 4 chip OZ960), you need to force apply to this input (pin 4) voltage 1,5 V - 3,5 V, which will manage the duration of the PWM and adjust the output current in the lamps.
Information courtesy of the party Rottor at the repair forum http://monitor.net.ru
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Another original solution unprotect OZ960 on pin-10 from the participant AMIT: Quote:
0Z960
very simple way to remove the protection.
put LED from 10 feet on the ground. (6 foot chip)
OZ964
From the forum participant monitor.net.ru KRAB Quote: Removing protection for OZ964:
At pin 4 (SST - Soft-Start Time) at the moment when you need to keep the 1,8 - 2V.
From the forum participant monitor.net.ru X1-42 Quote: OZ964 protection is released as well as OZ960, 10 LED output.
BIT3193
Information provided by the participant KRAB: Quote: Removing protection for BIT3193:
When protection voltage on pin 5 of about 3, 5 V.
When the voltage on pin 5, from 0.4 to 2.4V and the command "start" PWM operates autonomously, the lamp does not turn off.
TL1451
More information on the KRAB: Quote: Unprotect TL1451:
- Blocking protection chip TL1451 (analogue VA9741) reduces to the simple action of the output circuit 15 on the "ground."
But if it is done after a trip (eg forceps), nothing happens because the trigger is already locked protection from feedback sensors ties. - to restore the functionality you need to reset the trigger protection
switching off and on of the inverter or the level changes at the conclusion 9 chips.
During operation, the monitor reset trigger protection is automatically updated.
FAN7314
From the forum participant monitor.net.ru Valentin Quote: BN44-00182C with live transformers with the inverter, decided to throw all trances known ... 123rd unit, a primary trans paralleled,
and on foot 1yu FAN7314 put zener 4.3v with 5 to 620 ohm resistor and the housing.
FAN7311 - FAN7314
By participant monitor.net.ru Parazetam0l Quote:
Controllers FAN7311 - FAN7314
Following the procedure Valentin, (on this page) - 560 ohm resistor from pin 1 to ground.
Zener diode is not needed, then turned it still does not work.
MP1008
Information provided by the participant ancl: Quote: Removing protection from MP1008: 10K with 4 pins on the housing MP1008.
OZ9938Q
Information provided by the participant JUDI71: Quote: ... removed sewn, 10k parallel Conder 3 pin OZ9938.
AT1741
Information provided by the participant asanik: Quote:
AT1741S - LED display with 15 on the ground. I believe it is possible and resistor.
BD9897FS
Information provided by the participant comporator: Quote: Apparatus LCD Sharp LC-32A47l, inverter 6-lamp on BD9897FS. It was necessary to circumvent the protection BD9897FS, trance korotnula one of vtorichek - winding deleted. Long tried to do something on the
feedback did not work. As a result, put forward the LED is turned on pin 17 BD9897 and body that immediately shut off protection. Unit earned run and successfully issued.
TA9687GN
Information provided by the participant gchel: Quote: TA9687GN ---- connect 12 TIMER output through 47kom with Copus (parallel S818). Checked.
BD9883
Information provided by the participant AMIT: Quote:
cathode
or just sit on the ground 12 foot.
Information provided by the participant Captain: Quote: just sit on the ground 12 foot.
recommendation from Sharp.
OZ99361
Information provided by the participant Nlfjk: Quote: Disabling security in the chip OZ99361.
... regulator set the voltage at pin 1 of the chip within the sustainable launch 1,85 - 1,98 V
By participant monitor.net.ru kebastos Quote:
Supplement and I on LG 26LC2RA ... panel LC260WX2, master-slave inverter, assembled jack OZ99361 ... and can be changed at 9936, but it's not in it .... after the inverter is cut by three seconds ... off its
protection invented and there in the internet: see photo below ...
(Shutdown protection in this case is not dangerous for the inverter is cut because podsevshih lamps) .... but! When finalizing such it works very well, but every mode of "standard" and AV1 inverter starts to squeal like a dog incised at this working ... my little alteration other - hang in the air one paw micro and connect it through rezik 100K 5 volts .... the figure is clay, going 6foot Micra .... well, 1 foot between the microand the ground -konderchik 0.15 microfarads, and all - works great silence in all modes
OZ9910GN
Information provided by the participant evg4682: Quote: QZ9910 GN controller protection is disabled: LED with 3 foot stabistorov. Works with one lamp is regulated only contrast. Monitor Aser al1716.
Discussion topics participants monitor.net.ru as unprotect inverter to TL494
OZ9966SN
By participant monitor.espec.ws zuev-tv Quote: Inverter LCD TV on OZ9966SN - how to disable protection.
By participant monitor.net.ru gosha_gor Quote:
I want to share deprotection inverter IC type LX1691A: Dana 14 foot chip called as OP-SNS grounded to the chassis. Works OK.
MP1009
By participant monitor.net.ru Benzopiren Quote: Disabling security MP1009 - Jumper pin 5 on the body.
OZT1060GN
By participant monitor.net.ru bdvrt Quote: OZT1060GN - sv.diod pin1
QZ9938GN
By participant monitor.net.ru bdvrt Quote: QZ9938GN - sv.diod pin3 ... for bit3193
MP10072E
By participant monitor.net.ru gosha_gor Quote:
Removing protection IC type MP10072E: 3 pin - LED on the body.
INL837GL
By participant monitor.net.ru Benzopiren Quote:
OZ99361
By participant monitor.net.ru kebastos Quote:
Supplement and I on LG 26LC2RA ... panel LC260WX2, master-slave inverter, assembled jack OZ99361 ... and can be changed at 9936, but it's not in it .... after the inverter is cut by three seconds ... off its
protection invented and there in the internet: see photo below ...
(Shutdown protection in this case is not dangerous for the inverter is cut because podsevshih lamps) .... but! When finalizing such it works very well, but every mode of "standard" and AV1 inverter starts to squeal like a dog incised at this working ... my little alteration other - hang in the air one paw micro and connect it through rezik 100K 5 volts .... the figure is clay, going 6foot Micra .... well, 1 foot between the microand the ground -konderchik 0.15 microfarads, and all - works great silence in all modes
MP1038
Quote:
... deprotection MP1038 - 6th leg driver (FT) through 10k on the body. (By analogy with the MP1008, only there FT - 4th leg)
-
BIT3713
By participant monitor.net.ru asanik Quote:
BIT3713 - LED with 5 O TIMER on the ground. LED is not lit.
BA9741
By participant monitor.net.ru asanik Quote:
BA9741 F 15 pin - SCP connected to the "ground." Thus protection is blocked on both channels driver. (LCD CAMERON 1501SP)
max8722 - to 4-pin lock put on the ground.
SEM2006
By participant monitor.net.ru yuri 72 Quote:
SEM2006 - Protection LED is removed from pin 2 to ground.
MSC1692
By participant monitor.net.ru yuri 72 Quote:
MSC1692 - 4 pin resistor 220kOm on the body.
KH0803A
By participant monitor.net.ru yuri 72 Quote:
KH0803A - LED or R 390 - 820 kOm with 5 pins on the body. (Parallel to the N125).
SP5005
By participant monitor.net.ru Altai Quote:
korpus.OZ9910 disable protection LED with 10 pins (not to 9th)
MP1027EF
By participant monitor.net.ru Rishat-80 Quote:
Another way to disable protection PWM controller MP1027EF. Rare controller generally installed in industrial firms monoblocks ADVANTECH. PWM controller with a 20-pin, 16-pin should be connected to GND
through a red LED.
BD9240
By participant monitor.net.ru jurez Quote:
BD9240 Unprotect possible by planting 15 foot (CP) through 10k to work korpus.Perestaet backlight adjustment panel.
