Question about BenQ T701 TFT 17" LCD Monitor

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Benq7t3 no back light problems

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  • FRANEKGLUZA Jun 04, 2008

    jaki powinien byc ncp1200



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Posted on Dec 12, 2007


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I have samsung ultra slim tv, used ic tda 11105 v3/3 chip ic.The ,problem is when press stand by button the light blinking but tv not start.

The most possibility is a defective LED back lights strip. You may open the TV back cover, un-plug the cable between the main board & the power supply, supply the AC power to it, if the back lights do not light up, the problem is the LED strip, if the back lights light up, the problem is the main board.

Jun 26, 2015 | Samsung Televison & Video

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My Vivo ptv42hda tv makes a clicking sound when switched on but screen won't turn on how can I please fix the problem myself thanks as I'm good with electronics

do you have back light or not? and do you have sound or not?
if back light comes on and sound on but still no picture.. problem is in T-Con PCB.
if no back light.. but sound ok.. problem in back light.

Jun 02, 2013 | Televison & Video

2 Answers

My tv turns on, but gets no picture. It occasionally flashes the display, but quickly goes blank.

Hello The problem of your television is no picture.Usually in that symptom of LCD TV the problem is no back light.If there is no back lights the screen or display is totaly black.The problem is in the back light driver board, maybe there's a blown mounted fuse in the driver board or bad or leak capacitor from the supply of the back light driver board.Thanks...Hope it will help you to fix it..

Sep 03, 2011 | Westinghouse LTV-27w7 7 in. LCD HDTV

1 Answer

Screen goes black but sound stays on

Maybe the problem of your television is the screen back lights.The screen have no back lights.If theres is no back lights the problem is in the back lights driver or power supply.Usualy the common problem is loose connection at the socket of the cathode lights.The cathode lights have high voltage input come from the driver that my cause of over heat of connector.So try to resolder the connector or socket using soldering iron.It is located at the board of the television.Remove the back cover to see the board.

Aug 18, 2011 | LG 42LC2D 42 in. LCD HDTV

4 Answers

My Sanyo DP42848 has audio but no picture. How can I fix it?

i turn my sanyo on and its all good for a few seconds then i loose picture but still have sound ,,whats wrong?

Jan 21, 2011 | Sanyo DP42848 LCD TV

1 Answer

My 92 camry the sign of the back break and battery light on, the question is, if the back break light have problem, will it effect the battery light on? or the battery on my car have problem too? thanks...

The back brake and battery light being on are coincidental.

The back brake is on due to a low pedal due to the brakes not being adjusted in the back tightly enough, or a master cylinder problem, causing the brake switch to trip.

The battery light being on has to do with the charging system not working right. The alternator is likely bad.

Good luck on these repairs.

Aug 04, 2010 | 1992 Toyota Camry V6

1 Answer

Back up lights come stay on when head lights are turned on

Don't have a schematic on this but likely -problem is from lighting control module... However check that trailer harness is properly installed and did not cause initial problem.

Dec 21, 2008 | 2005 Jeep Liberty

1 Answer

Dark tft monitor

Hello atahirkhelii,

This is an indication that your back-light or inverter has malfunctioned. This problem is tricky, because if the back-light is a separate unit you will be able to repair this problem by replacing the back-light or one of its associative components, however if the back-light is part of the screen so as to make it one unit, then the repair job becomes cost prohibitive.

The troubleshooting process is as follows:

1) take the cover off of the screen panel and expose the back of the screen and the circuitry of the main board.

2) with a multimeter measure the test point voltages as compared to the schematic and note any abnormalities.

3) using the schematic as a guide determine if the back-light can be turned on manually (this is just a test to see if the back-light or its circuitry is the problem)

4) if the back-light circuitry is faulty replace the malfunctioning components,if the back-light is faulty replace the back-light (if possible, because the back-light may be part of the screen)

5) If you can replace the back-light order it from the manufacture to insure compatibility.

6) if you can not replace the back-light because it is part of the screen, contact the manufacture and ask them the cost of a new screen/back-light combination.

7) replace the components, close the unit back up and then do a 48hour burn it test on the player.

I hope this helps,

Thank you,


Oct 08, 2008 | Mintek MDP-1810 Portable DVD Player

2 Answers


jaki powinien byc ncp1200 (40,60 czy 100 Mhz)

Nov 20, 2007 | Gateway FPD 1730 17 in. Flat Panel LCD...

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