Question about E-Machines eMachines Monitor E15T4

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How can I get the screen to light back up. I'm forced to use a flashlight to see anything

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The issue if your light bulb behind the LCD matrix is burnt out you need to replace them. This is common for these monitors. The bulbs simply snap off an on by a connector to the high voltage power supply. When you open the monitor up, you will see he board with HV supply on it Trace the two (red an white) wires to the backlight (bulbs) and verify by looking at their ends looking for black discolor at he ends of the bulb (This means the interior of the bulb is carbonizing = shorting out). Most times the monitor will shut down into orange light, but sometimes it will not ignite the fluorescent bulb)(s).

Posted on Dec 01, 2014

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You may have to replace the screen if you can see things on the screen but have to use a flashlight this would be something I would change out. If you want to go deeper into it plug the monitor into another working computer and see if it works fine if that is the case then you are dealing with a video card issue. Replace the video card and go from there it should work fine from that fix. Thanks for using FixYa! do not forget to vote for me. John

Posted on Mar 12, 2011

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Samsung led tv screen went black

Back light problem. Check and replace the damaged components at its back light inverter circuit. If you wish to get more details visit the site linked here.

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Phillips 60pp9202-17 TV has sound, but no picture, no chirping, power light is on

Hold flashlight up to screen to see if back light is out. If it's out you'll see video.if it's an older flat screen it could have a bad inverter board.

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Determine which board or boards could be problem?

Unfortunately, it's probably the power supply board. The fact that you can see the menu with a flashlight means the display itself is still functioning, which would be the most expensive part to replace.

Get a quote from a TV repair shop, should be able to quote without bringing it in. Check reviews on the repair shop.

Don't open it up yourself! There are hazardous voltages even when the TV is unplugged!

Jul 20, 2016 | Televison & Video

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How to check if the backlights are working on a Samsung 46"

The easiest way to check for back light issues is to turn on the TV and get a good flashlight. Use the flashlight to look at the screen while it is on. If you see something on the screen with the flashlight and not by its own lighting then your back light has gone out. Most common causes are capacitors that have blown on the board and you're not getting any power to your back light. Having worked on monitors and TVs, this seems to be a common issue.

If the TV is out of warranty, take it to a local electronics store or TV repair shop.

Hope this helps.

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How to do flash light test on Toshiba model 50l1350u?

Disconnect everything from the tv.
Turn on the tv in a darkened room, turn on the flashlight and inspect the screen closely with the flashlight for any snow or text from the menu screen. If you see anything, your T-Con board and Main Board are ok.

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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

Screen is black but i have sound

Sounds like you have a back light fault. Dim the lights in the room, turn the set on and shine a bright flashlight on the screen. If you see a faint picture, you have a back light fault. If you do not see anything, you have a video feed problem. Either way, I would suggest getting the set diagnosed to pinpoint the problem

Nov 22, 2012 | Philips 42PFL5332D 42 in. LCD Television

1 Answer

I cut it on i can hear it starting up but my screen is black can you fix it

Hi and welcome to Fixya.

I want you to try and shine a bright light; like a flashlight on the screen for me;

If you see anything (even very faint) then your problem is that you need a new back light for it. If this is the case, it is usually really cheap on places like

If it is still black; try taking out the battery;

remove power cord;

hold power button for half a minute;

Then; plug your power cord back in;

Turn on computer;

and replace your battery.

If it is still totally black, you may have to replace the screen for it.

Please rate this solution if it was helpful. It doesn't cost anything, only takes a minute and is greatly appreciated!


Jan 08, 2011 | ASUS Computers & Internet

2 Answers

The screen doesent turn on when the tv is powered on

Do this:

Take a flash light point it directly at the screen now if you see something then you got a back light that is out.

Let me know ether way here, If you do not see anything then there might be something else wroung.

Please do leave your feedback and ratings for your free answer today.

May 10, 2010 | Westinghouse LTV-27W2 27 in. HD-Ready LCD...

1 Answer

Laptop gone blank whilst on internet will not come back on

Most laptops have a function switch to change between lcd / external monitor / both. If yours is equipped with one, try changing the setting.

If you power it off, on, does ANYTHING appear on the screen?

Last resort, if you take a bright flashlight and shine it on the screen can you see any of the desktop / window? If so, then what has happened is the back light has buned out.

Mar 11, 2010 | Computers & Internet

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