lcd repair -اصلاح شاشات, | How to remove the protection of lcd led tv

lcd repair -اصلاح شاشات | How to remove the protection of lcd led tv

turn off protection ic
How to remove the protection

of the inverter

Several ways to protect shutdown in popular PWM

controllers, LCD inverters.

Attention!

Not all methods tested by the author and may not be recommended

repairers who do not have sufficient experience and theoretical

knowledge.

If anyone broke the TV does not show, be sure to link - the TV is

not switched on

When repair and diagnosis, it is often necessary to check the individual

inverter circuits - power converter lamps illuminate the LCD panel.

Carry out the necessary measurements is sometimes not possible, the

generation of breaks for various reasons, for example because of the

imbalance in the loads.

Together, artists and researches different options for the repair of

conferences were blocking inverter protection in order to obtain

diagnostic capabilities.

Preserved discussion on one of http://monitor.net.ru/forum/lcd-info-

239071.html forums.

Readers are invited to review previously published examples of how to

disable the inverter protection to these PWM controllers:

AT1741 , BA9741 , BD9211F , BD9215AFV , BD9222FV , BD9240 ,

BD9261FP , BD9270F , BD9275F , BD9276EFV , BD9766VF , BD9777 ,

BD9882F , BD9883 , BD9884VF , BD9896 , BD9897 , BD9897F , BD9897FS ,

BI3101 , BIT3102A , BIT3102B , BIT3105 , BIT3193 , BIT3251 - BIT3252 ,

BIT3713 , DDA009 , DT8211 , ILN816GN , INL837GL , FAN7311 , FAN7314 ,

FAN7316 , FAN7547 , KH0803A , LX1691A , MAX8722 , MP1006 ,

MP1007ES , MP10072E , MP1008 , MP1009 , MP1010 , MP1027EF ,

MP1038 , MSC1692 , OB3302CP , OB3309 , OB3316QP , OB3328UQP ,

OB3362RP , OZ5508G - OZ5508GN , OZ960 , OZ964 , OZ9643N , OZ971SN

, OZ972GN , OZ9910GN , OZ9919GN , OZ99361 , OZ9938Q , OZ9939GN ,

OZ9966SN , OZ9972 , OZ9976 , OZL68GN , OZT1060GN , SAQ8818 ,

SEM2005 , SEM2006 , SEM2105 , SEM2107 , SP5001Q , SP5005 ,

SS1091ASN , TA9687GN , TL1451 , UBA2070 , UBA2071AT , UBA2074

OZ960

To disable protection for SoftStart input (pin 4 OZ960 chip) should be

forced to file for this input (the pin 4) voltage 1,5V - 3,5V, which will

manage the PWM pulse duration and regulate the output current in the

lamps.

Information courtesy of the party to repair Rottor forum monitor.net.ru

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Another original solution OZ960 protection tripping pin-10 from AMIT

party.

Quote:

0Z960

very simple way to remove the protection. supply LED with 10 feet on the

ground. (6 foot chip)

OZ964

From party forum monitor.net.ru KRAB

Quote:

Removing protection for OZ964:

On pin 4 (SST - Soft-Start Time) at the moment when you need to keep the

1,8 - 2V.

From party forum monitor.net.ru X1-42

Quote:

OZ964 protection is removed as well as OZ960, LED 10 output.

From party forum monitor.net.ru CAIIIA

Quote:

The LCD LG 32LK330-ZB Inverter VIT71884.00 REV: failed to win 2.LOGAH

(OZ964 + LM339), that works, there is, but only managed to disable the

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protection for both 4 and 10 feet. Separately protection is not blocked.

BIT3193

Information provided by the member KRAB:

Quote:

Removing protection for BIT3193:

When the protection is activated the voltage at terminal 5 of about 3, 5 V.

When the voltage at terminal 5, from 0.4 to 2.4V supply and command

"start" PWM operates autonomously, the lamp is not switched off.

TL1451

More information on the KRAB:

Quote:

Remove the TL1451 protection:

- Protection Lock-chip TL1451 (analogue VA9741) is reduced to the simple

action of the output circuit 15 to the "ground".

But if you do it after tripping (eg forceps), nothing happens because the

trigger protection is already locked by the feedback sensor.

- For disaster recovery protection you want to clear off the trigger and

restarting the inverter or a change in level on pin 9 of the chip.

In operating mode, the monitor resets automatically updated protection

trigger.

FAN7314

From party forum monitor.net.ru Valentin

Quote:

BN44-00182C with live transformers with the inverter, decided to throw in

the well-known trance ... 123rd unit, a primary shemales connected in

parallel,

and on foot 1yu FAN7314 set to 4.3v zener with + 5V and 620 ohm resistor

on the case.

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FAN7311 - FAN7314

From party monitor.net.ru Parazetam0l

Quote:

Supervisors FAN7311 - FAN7314

By Valentin procedure (on this page) - 560 ohm resistor, with the output 1

on the body.

Zener diode is not needed, then turned on it still does not work.

MP1008

Information provided by the member ancl:

Quote:

Removing protection from MP1008: 10k 4 MP1008 pin on the body.

OZ9938Q

Information provided by the member JUDI71:

Quote:

... Removed sewn, 10k parallel Conder 3 pin OZ9938.

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AT1741

Information provided by the member asanik:

Quote:

AT1741S - LED display with 15 on the ground. I believe it is possible and a

resistor.

The LED does not light up.

BD9897

Information provided by the member fantom555:

Quote:

At BD9897 is a 17 pin. ... "Hang" with him on a lot of LED-Live and the

driver begins to "thresh" no matter what.

BD9897F

Information provided by the member status DNA:

Quote:

BD9897F 22 SCP concluded chip suspended from the LED cathode to

ground.

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BD9897FS

Information provided by the member comporator:

Quote:

The machine LCD Sharp LC-32A47l, inverter 6 at the tube BD9897FS. It

was necessary to bypass the protection BD9897FS, in a trance korotnula

one vtorichek - winding deleted. For a long time trying to do something for

the feedback, nothing happened. As a result, set-Live LED on the 17 pin

BD9897 and the housing, which immediately disable the protection. The

unit earned run and successfully issued.

TA9687GN

Information provided by the member gchel:

Quote:

TA9687GN ---- connect the output 12 TIMER through 47kom with Copus

(parallel S818). Checked.

Information provided by the member fetyunin Sarge:

Quote:

TA9687GN instead of the resistor put svetodid and regulation of

brightness remains.

BD9883

Information provided by the member AMIT:

Quote:

you can use any LED, 13 foot-SS, BD9883 IC, --- ,, anode body ---- 7, a

cathode,

or just sit on the ground 12 foot.

Information provided by the member Captain:

Quote:

just sit on the ground 12 foot.

recommendation from Sharpe.

OZ99361

Information provided by the member Nlfjk:

Quote:

Disabling security in the chip OZ99361.

... Regulator to set the voltage at terminal 1 of the chip within the

sustainable launch 1,85 - 1,98V

From party monitor.net.ru kebastos

Quote:

Complementing and I for LG 26LC2RA ..... LC260WX2 panel, inverter

master-slave, master assembled on OZ99361 ..... can be changed on 9936,

but that's not it .... after the inverter is chopped by three seconds ...... off to

protect it invented and there in the internet: see photo below .....

(protection tripping in this case, is not dangerous for the inverter because

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of chopped podsevshih lamps) .... but this refinement it.! works, all is well,

but every mode of "standard" and AV1 inverter starts to squeal like a dog

incised while working ....... my remake is a little different - hang in the air

one leg micro and connect it through rezik 100k to 5 volts .... below is clay,

going 6 foot Micra .... well, between 1 foot and micro land - kondёrchik

0.15 microfarads, and all - works great silence in all modes

OZ9910GN

Information provided by the member evg4682:

Quote:

The controller turns off QZ9910 GN protection: LED 3 feet stabistorov. It

works with a single lamp, regulated only by contrast. Monitor Aser al1716.

More variants from other forums:

BIT3102A

From monitor.espec.ws zuev-tv party

Quote:

For inverters BIT3102A protection off = set on pin 6 voltage 2.5V.

From party monitor.net.ru maksatiha

Quote:

Disable protection on ms BIT3102A. Protection otklyuchaetya if 6 foot

planted on the ground through R = 40kOm. Verified personally. I had it

done when installed in the Samsung N920 instead MT2-17 REV0.2 block

BN44-00082C

OZ9966SN

From monitor.espec.ws zuev-tv party

Quote:

LCD TV inverter on OZ9966SN - how to disable the protection.

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LX1691A

From party monitor.net.ru gosha_gor

Quote:

I want to share with deprotection inverter IC type LX1691A: Dana 14 foot

chip called as OP-SNS is grounded on the case. Works OK.

MP1009

From party monitor.net.ru Benzopiren

Quote:

Disabling security MP1009 - Jumper pin 5 on the body.

OZT1060GN

From party monitor.net.ru bdvrt

Quote:

OZT1060GN - sv.diod pin1

QZ9938GN

From party monitor.net.ru bdvrt

Quote:

QZ9938GN - sv.diod pin3 ... for bit3193

MP10072E

From party monitor.net.ru gosha_gor

Quote:

Removing protection IC type MP10072E: 3 pin - LED on the enclosure.

INL837GL

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From party monitor.net.ru Benzopiren

Quote:

INL837GL stabilized power supply at terminal 12 - 1.7 - 2 V. Connect

stabistorov (LED) display with 12 on the ground, to the same supply power

from the source of 5 V through a resistor 470 - 510 ohms.