Question about Elotouch 17" LCD Monitor

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I have same problem, If you shine a light on screen it is obvious that its working, minus the backlight of cource...

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It cam be bad cap in the power supply section or backlight inverter circuits problem, worst case can be the lamp.
If you are going to DIY 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/home/budm/allalbums
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 troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Replacement board: http://www.lcdrepair.us

http://www.badcaps.net


Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

Posted on Sep 29, 2010

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Posted on Jan 02, 2017

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1 Answer

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If the screen is black, then with computer on, shine a strong flashlight on the screen at about a 20 degree angle (90 degrees would be pointing the light right at the screen). Move it around to see if any of the expected graphics (e. g., login request) are visible. If so, your backlight is not working, but everything else is fine. A backlight failure is usually due to a dead fluorescent tube, but sometimes is the result of a bad inverter. If you have an LED backlight, check the LED driver circuit first.

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Can you hear the mac startup sound? If you hear then its booting up.

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1 Answer

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You need to take off the front lcd bezel and look below the lcd, that's the inverter. Match up the part numbers with another one on ebay, swap it, and you're good to go.

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Goodmans gtvl32w27hdf - screen is flickering and picture is darker than it should, but sound is fine. Have tried turning off and on. doesn't matter what channnel you're on and its the same for video so i...


It is most likely the screen backlight. LCD TVs have thin fluorescent lamps and a part called an inverter board which is a transformer similar to a light ballast.

Inverters are typically a $50-100 part and are trivial for any technician to replace. The backlight lamps themselves tend to go pinkish when near the end-of-life, and are a low-cost part, but it requires a lot of work to change the lamps.

IF the LCD display itself is good, then the screen image should remain perfect and undistorted...if the backlight fails altogether, you should be able to see the image by shining a bright flashlight directly on the screen (only as a test, not as a long term solution, obviously :) )

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1 Answer

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Your backlighting may be out.

Try shining a flashlight onto the screen with the lights off in the room.

If you can vaguely see your desktop on the screen, then your backlighting is out.

Let me know if this works,
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1 Answer

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Sounds like you have a bad backlight, the backlight shines light through the translucent LCD layers to give you your picture in the same way you hold slides up to the light

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