Question about Samsung SyncMaster T240HD 24" TFT LCD Monitor

1 Answer

I'm using a Samsung T240HDTV. The screen goes to very dark frequently so that I can hardly see the image, after I turn it on. I guess may be something wrong with the backlight. Can somebody help me out with it? THANK YOU!

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Contributor
  • 32 Answers

The problem is probably not with the backlight, rather the inverter that powers the backlight. If you open the back of the lcd so that you can see the circuit board you might see several bulging, or blown capacitors. This is a common problem with lcds. If you replace the capacitors the problem should go away.

Posted on Sep 12, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Sony Vaio E Series VPCEH37FX screen goes dark, but fine otherwise


If you can see faint dim images on the screen, then your back light or power inverter has failed. They are not adjustable or repairable and must be replaced. If you can't see anything on the screen, the LCD has failed and must be replaced. Sometimes it's hard to see the dim images so use a flashlight to help determine if there is any image on the lcd.

Oct 27, 2013 | Sony VAIO Computers & Internet

1 Answer

Dark shadow in lower left of screen


i guess there is some problem with your panel. make sure you show it to the nearest service centre

Jul 22, 2013 | Toshiba 37HL67 37 in. LCD HDTV

1 Answer

My brightness control does not work just turned on and can not hardly see anything it is up and running what now


Have you tested it with an external monitor?

I would say you either have a damaged inverter board or screen baclight lamp. Usually the inverter board fails in one of the following ways:

1. When you turn on the laptop, the screen lights up for a short period of time and then goes dark. You still can see an image but it is very dark, almost invisible and definitely not usable. When you restart the laptop, the screen lights up and then goes dark again. The laptop works fine with an external monitor.
2. Your laptop turns on but the screen remains dark all the time. You still can see a very dim image outline. The laptop works fine with an external monitor.
3. The laptop screen works fine for hours or even days, but sometimes it goes very dark as it mentioned above. When you restart the laptop, the screen works fine again.

Inverter failure symptoms are very similar to backlight lamp failure symptoms and in most cases you cannot tell which one is causing the problem until you replace either the inverter board or the backlight lamp. From my personal experience, inverter boards fail more often than backlight lamps. If you have to guess, replace the inverter first.

Mar 24, 2010 | Dell Inspiron 1545 Notebook

1 Answer

Dell ADAMO 13 w/Vista 64 Random power failure...goes dead in 1 second. Battery fully charged. Happened with external power and when on battery. I have latest BIOS v6.0. I ran pre-boot diagnostics...


If the power totally fails (i.e. power is cut off, LEDs turn off, fans stop, ... etc), then this more likely to be because of a short circuit developing in a failing semiconductor component, or a power supply problem.
However, if the laptop is still running & only the display on its LCD is cut off but the laptop itself stays powered on, then your laptop might be experiencing a failing screen inverter board, a failing screen backlight lamp, or a failing LCD screen cable.

TYPICAL INVERTER FAILURE SYMPTOMS

1. When you turn on the laptop, the screen lights up for a short period of time and then goes dark. You still can see an image but it is very dark, almost invisible and definitely not usable. When you restart the laptop, the screen lights up and then goes dark again. The laptop works fine with an external monitor.
2. Your laptop turns on but the screen remains dark all the time. You still can see a very dim image outline. The laptop works fine with an external monitor.
3. The laptop screen works fine for hours or even days, but sometimes it goes very dark as it mentioned above. When you restart the laptop, the screen works fine again.

Inverter failure symptoms are very similar to backlight lamp failure symptoms and in most cases you cannot tell which one is causing the problem until you replace either the inverter board or the backlight lamp. From my personal experience, inverter boards fail more often than backlight lamps. If you have to guess, replace the inverter first.

Feb 07, 2010 | Office Equipment & Supplies

1 Answer

Samsung syncmaster 932mw i turn it on and after about 3secs the screen goes black/off. but th power light is still on and i still have audio. for the three secs it is on i can see a check signal sign come...


same problem here, someone told me that it has something to do with the power supply. I have not been able to get the part anywhere... I thought it was totally dark but it is possible to see some images in the dark dark screen. I wish I could fix it to! :(

Oct 17, 2009 | Samsung Televison & Video

1 Answer

When I turn on my sony dsc-t1 image is dark and horizontal lines


contacted sony and they said they are having same issues with many sony dsc-t1 cameras and they are fixing it for free. just have to pay shipping cost and they repair it for free. something internaly I guess.

Jan 02, 2009 | Sony Cyber-Shot DSC-T1 Digital Camera

Not finding what you are looking for?
Samsung SyncMaster T240HD 24" TFT LCD Monitor Logo

Related Topics:

447 people viewed this question

Ask a Question

Usually answered in minutes!

Top Samsung Computers & Internet Experts

Computer Repairing
Computer Repairing

Level 3 Expert

14641 Answers

kakima

Level 3 Expert

102366 Answers

phoenix chi
phoenix chi

Level 2 Expert

389 Answers

Are you a Samsung Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...