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Helppppppp......Please ...Back light dissappeard after a few minutes of use.

My monitor back light is off after a few minutes of use. However if I turn it back on, I will come back for a few minutes again. I notice one thing the picture still there without the back light..........Please

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  • 32 Answers

SOURCE: Monitor does not retain picture


Based upon so many people that have the same problem, it probably is a defect... I may call the manufacturer, chances are they are aware of the problem and are willing to replace it or tell you what to do.

I found the contact info here;;jsessionid=4EA0E8447B0D219E50E60867ADA1D9E5.public_a_14b?sp=page74&UserCtxParam=0&GroupCtxParam=0&dctx1=25&CountryISOCtxParam=US&LanguageISOCtxParam=en&ctx3=-1&ctx4=United+States&crc=790373818

Acer America (USA only)
Acer America Corporation
333 West San Carlos Street
Suite 1500
San Jose, CA 95110
(408) 533-7700 – Phone
(408) 533-4555 - Fax
(408) 533-4574 - Sales Fax

I also found this part for monitor repair;



Posted on Jan 11, 2008

  • 2 Answers

SOURCE: Flickers on start up and very slow going to normal viewing colors and lighting

FIXED: I took the advice to replace C110 and C111 with 1000uF 35V electrolytics ( $3.18 and a pretty easy time prying open the case with a medium-small flathead screwdriver, disconnecting a few connectors, 4 silver screws (2 on the left & 2 on the right of the LCD), 2 black screws on the back of the metal case, 3 black and one brass screw on the PC board, and it works like new.

HINT: Be sure to insert your new capacitors correctly (positive and negative sides). The capacitor has + and - sides (the - side was marked on mine). The bottom of the PC board (where you apply solder) has a + marked on the positive side.

For the faint of heart: I am an inexperienced and HORRIBLE solderer and know close to nothing about capacitors, resistors, etc. So, if I can do it you can too!!!

Posted on Mar 03, 2009

  • 1869 Answers

SOURCE: Picture ok for a few minutes then go blank

It's not the monitor it's your video card replace it

Posted on May 20, 2009

  • 286 Answers

SOURCE: My ViewsonicVP930b Monitor Suddenly Turns Off

This is a classic VP930 problem.

It is caused by bad capacitors in the power supply circuit.

Open the monitor, and look at the power board. There are six capacitors. Replace the 220uF @ 25V and the 1000uF @ 16V capacitors. I would recommend replacing them with 35V and 25V capacitors respectively.

If the serial number on your monitor starts with Q8H you could also have a bad IC on the main board. Q8 on the main board is an FET in an IC package. If this problem persists solder a wire from the right side to the left side. There is one pin that turns the IC on and off. All the other pins (per side) are soldered together. Do not solder the pin on the left side that is by itself. Just leave it. Solder ALL the other pins on the left to ALL the other pins on the right.

Remember, do this ONLY if the problem persists after replacing the capacitors AND if your serial number starts with Q8H.

Posted on Sep 15, 2009

  • 11361 Answers

SOURCE: Viewsonic VG2230wm 22 Blank screen

Look for bad caps in the power supply first, see example of failed VIEWSONIC monitors due to bad caps here:
Post back what you see so we can guide you furhter.

Posted on Feb 08, 2010

SOURCE: monitor starts, about three minutes no picture but


It is the picture picture board on your monitor that is malfunctioning, since the power led or button is on, but the display screen goes blank after few seconds, it means the picture board of your monitor has developed fault.

The best thing for you to do now is to take the monitor to a local repairer within your vicinity or any service center to help with the replacement of the picture board because the fault is not something you can fix yourself, in order not to complicate issues.

Take care.

Posted on May 07, 2010

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I have samsung sync master 920nw monitor . this monitor turn on after few minutes disply is going turn off ,but power butten LED working...I romove the PCB and changing All capacitor but no use ..same

The back light tubes are probably exhausted. They can be replaced, or you could try a CCFL to LED back light conversion. has some kits for doing that.

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I have a 22' Dell monitor that goes black after a few minutes. I can still see the images in the background. The monitor's power stays on and when I turn it off then back on it comes back on with such a...


I think you have TFT monitor? If you are having TFT, the issue was occurring because of two problems.

1. Might be your monitor FL invertor was faulty.

2. Or your monitor FL light having problem.

Check with any local service person. Whether FL invertor or FL light having problem?

If you found the solution is helpfull please vote for me, Thank you.

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The monitor will not come on immediately when we first turn the computer on. We have to play with the buttons underneath the monitor (ie. the source, menu etc. button) sometimes for fifteen minutes or...

This is only a coincidence that when you fiddle with the controls the monitor comes on. Just leave is aside and the monitor may come on in 15 minutes.
If so then the fault can be due to poor filtering inthe power supply, poor solder joints inthe main board or the thermally active components.
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Change suspected capacitors in the circuit/power supply.

Sep 11, 2010 | Computer Monitors

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The picture board on your monitor is faulty or bad, since it goes black after few minutes, it means the picture board of your monitor has developed fault.

The best thing for you to do now is to take the monitor to a local repairer within your vicinity to help with the replacement of the picture board or any service center because the fault is not something you can fix yourself. in order not to complicate issues.

Take care.

Apr 21, 2010 | HP w1907 LCD Monitor

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Viewsonic VG2230wm 22 Blank screen

Look for bad caps in the power supply first, see example of failed VIEWSONIC monitors due to bad caps here:
Post back what you see so we can guide you furhter.

Feb 06, 2010 | Relisys RLT1720 17" LCD Monitor

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Dell E153FPc switches off (black Screen) after a few minutes. If you switch it off & back on again it will stay on for a few minutes, then go off again.

You could have an inverter board problem. The inverter supplies high voltage to the CCFL lamp which provides the back-lighting.
For service. parts and DIY info check out LCD Parts - click in this link to their WEB site : -

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Screen comes on then goes out in 5 seconds. The backlight goes dark but the seen is working, just can't see it. The backlight is out...

mark587, Did you shine a very bright flashlight 1" from the screen to try and see the WIN-desktop ?? Even though the screen appears BLACK. Your words above said: JUST CAN'T SEE IT Did you really NOT see anything? Have you seen any of the longer video clips of "LCD Monitor Disassembly" on YOUTUBE? Some BLACK screen "symptom" lcd displays can be repaired for less than $10 in parts. Capacitors! Also check videos on lcd repair. Then get back here to fixya and I or any of the guys can help you decide what to do with your display whoose screen is now dark and lifeless. After doing the YOUTUBE thing you may even tell us what you will do!!! Hope this was helpful. Yes we do want to hear back from you. please rate this response on fixya. I'm louie12fix on fixya or lmistyrel @ Bye for now.

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Acer AL2416W 24" Monitor switches off and on after a few minutes

open the monitor observe smps capacitor in primary filter may leackage if faulty replace it

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Screen goes black and power light goes out after a few minutes

it would seem that one of the internal components has failed / overheated Dont open the rear of the monitor !

if pos drop it into your nearest pc repair shop and have is serviced it may just need cleaned to free it from dust build up
on the inner parts this may be causing the unit to over heat

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