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Samsung model UN55ES6820F powers on and has audio but black screen no image or backlight

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  • Master
  • 943 Answers

Could be a few issues to consider. The video processing card is faulty. hold a flashlight close to the screen and see if you can see the images. if yes, your powerboard has a failure and the backlight has failed. either way, get a repairman to attend to it.

Posted on Dec 06, 2019

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
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Posted on Jan 02, 2017

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Geekman

Chris Hingee

  • 32281 Answers

SOURCE: LCD Screen is black

It could be either, if you can get another LCD screen (same make/model) you can swap to ckeck it out.
You could check the inverter by touching its output and if you get a bit of an electrical shock then you know the inverter is working or check it with a multimeter if you don't like electric shocks.

Posted on Dec 28, 2008

Anonymous

  • 2 Answers

SOURCE: samsung laptop 710 backlight problem, screens

This is a known fault with r710s but you could try to update your display driver

go to NVIDIA - Download Drivers


Update your nvidia drivers with this link (make sure you're using Windows 7 32bit) if not go to the nvidia site and let it scan your pc.

After you've done this you should be able to adjust your screen brightness through the windows brightness adjuster.

Posted on Feb 05, 2010

Cary Leonardt

  • 304 Answers

SOURCE: i have a samsung ln-t375ha my screen blacked out

The T-Con bd or the Main bd is bad. Have a tech check it out. There is no way to check these bds with a meter.

Posted on Apr 16, 2010

budmrtn

Bud Martin

  • 11361 Answers

SOURCE: orion model 15dcl push power

Well, most common failure in the LCD monitor is due to bad caps, worst case will be the lamp assemblies.
So look for bad caps first.
If you are going to DIY and already try the monitor with another PC, and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Posted on Dec 30, 2010

Geekman

Chris Hingee

  • 32281 Answers

SOURCE: My HP DV4000 beeps when I press the power button and the screen will stay black.

This POST error code maybe -
one long, two short beeps

  • System board failure
  • Video adapter problem
  • LCD assembly failure

Posted on Dec 04, 2012

Testimonial: "I had already thought of that, but since I couldn't find any notebook beep code charts (there are plenty for desktops, instead) I asked for confirmation. This seems to be video card related. I think I'll just ditch this old notebook and get a new one. Thanks anyway."

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1 Answer

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Hi,
Power on the unit in the dark room then shine with the flashlight directly in the screen, you will barely see the images. This is because your backlight is not functioning. The following reason is the caused.
1. Power supply - missing B+(supply voltage) coming from this board feeding the inverter board. This is caused by faulty transistor, dried/leaky electrolytic capacitor, open fusible resistor.
2. Inverter board - even the B+ is good from the power supply, if the fuse, driver transistor, driver transformer is faulty no output to the backlight resulting to black picture.
3. Busted backlight - even inverter board is good but if this is busted resulting to black picture also.
Diagnosing the fault is technical and if you don't have necessary tools and test instrument and can't fix it yourself, I would advice you to look for an experienced technician to isolate the problem.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

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