Question about Liquid Video L17LCD2 17" Flat Panel LCD Monitor

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Black screen on L17lcd2

Unit is completely disassembled/was told it was either the backlights;or the inverter board.Makes more sense,that it's trhe inverter bd. -then both lights expiring at same time. Where can I find Liquidvideo parts/or damaged monitors for parts?

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If you even manage to find some, I am almost completely sure it would be better to buy a new one when it comes to finances. Putting these parts together is a skilled technique. Also, if you have a guarantee with that monitor, why not return it.

Posted on Jan 15, 2009


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1 Answer

TV turns on, but the screen is very dark, almost completely black.

It sounds like your backlight is out or barely functioning. Try replacing the inverter board(s). Since you can see a picture, the T-Con board is probably okay.

Apr 20, 2017 | Polaroid 2611-TLXB TV

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Hi, I have hp pavilion dv2500 laptop. I have display problem.pls help how to rectify it. If i connect exteranl CRT monitor Display is coming . Pls tell me how to disassemble the laptop.

You might have either a faulty LCD cable or screen inverter board.
The LCD cable transfers data signal from the motherboard & video card to the LCD screen. It also supplies high voltage DC power to the screen inverter board. The screen inverter board works as a power supply for the backlight lamp mounted inside the LCD screen. It converts low voltage DC power to high voltage AC power needed for the backlight lamp.

In this service manual, you will find an illustration of how to disassemble the laptop & replace either the LCD cable or screen inverter board:

Sep 17, 2010 | HP Pavilion dv2500t Notebook

1 Answer

The screen on my HP compaq nc8000 laptop goes blacks usually after the screen has been closed. the screen is very dark after is hardly visible except when squinting. does anyone know what the problem is or...

The culprit will be the inverter board of your LCD screen that drives the backlight, my nc8000 shows the same symptoms after 6 years of heavy daily usage. After pressing the LID sensing button near the right hinge the backlight usually remains on, but sometimes you have to press it several times under a minute once it finally stays on. The proper fix would be to disassemble the screen and replace the inverter board, as the LCD and the CCFL backlight tubes are perfectly fine in my case.

On how to remove the screen from the laptop, you can get help from this HP guide:
(it's in section 5-35, that starts on page 128)

Unfortunately, I can't help you out on the other part, on how to disassemble the screen itself (but I suspect it has 4 or 6 screws under the rubber "feets" on its front), and I can't help you out in fixing the inverter board itself either...
If you want to fix the board yourself, you have to be able to wield the soldering iron perfectly, and your goal will be to replace some capacitors (they are usually bulging, so you can identify them being the culprit by the naked eye too).
The other option is to order a replacement inverter board, and simply swap the bad with the new one, it is still more economical than to buy a new display assembly as a whole; some chinese manufacturers are available, but I bet you can find some source more closely to your current location, just google for:
hp nc8000 inverter board

Aug 12, 2010 | HP Compaq Business nc8000 Notebook

2 Answers

Picture great then goes black

Ur LCD inverter backlight board is dead.Replaced this LCD inverter backlight board will get ur picture back.Tries websites, to buy a refurbish LCD inverter backlight board for the replacement.It a long board in shape.

Mar 11, 2010 | Element Electronics FLX-3211B 32 in. LCD...

1 Answer

Screen blacks out on certain channels randomly..doesn't happen all the time audio still works the picture just goes completely black for a bout a second then reappears.. very's new and it also...

Ur LCD inverter backlight board have problems,just not dead yet.When ur LCD inverter backlight board is dead.U will get only sound and no picture at all.

Feb 26, 2010 | LG 55LH90 55 in. LCD HDTV

1 Answer


ruth_coleman, Only a guess but I would say that the "switch-mode-power-supply" or "backlight inverter power supply" has a problem. Is screen always BLACK? how old is unit? How many "ON" hours on this unit? Is unit new? Out of warranty? Did it ever display a PERFECT IMAGE on it? When? Did it always HUMM?? FYI check out VIDEO clips of LCD monitor disassembly and repair on YOUTUBE to find out what is inside a typical LCD display. You will have a better handle on what to do about getting it repaired or to trade in for new. Yes, monitors can be REFURBISHED with new SMPS/Inverter boards for $50-$100. Check out some ADs here on fixya. I'm louie12fix on fixya or please rate this response and get back to me if you need further assistance. Bye for now.

Oct 05, 2009 | Emprex LM2201 22" LCD Monitor

2 Answers

Backlight failure HP DV1010

You need a new screen or inverter, depending on the problem. You can't replace the backlight itself because it is build into the LCD panel. Using a mercury reaction, it makes light. Because of the mercury, it is also dangerous to replace.

Jun 25, 2009 | HP Pavilion DV1010 Notebook

1 Answer

The screen is too dark to read anything though the power comes on. i tried to increase the brightness but did not work NEED HELP!!!

Sounds like your backlight or inverter is on its way out. You can pick one up on ebay.  Google how to check backlight/inverter issues with your model.

May 02, 2009 | Computers & Internet

1 Answer

Flickers and goes black

No it is not a backlight it is the inverter board which sends power to the backlight most likely cause is bad capacitors on the inverter board. this wil require soldering to repair backlight is even worse it requires you to disassemble the lcd unit. if you are gong to ope up the lcd monitor look on all pcb boards for deformed (blown) capacitors replace those with identical ones from yur electronics shop9they must be exactly the same mfd (Microfaradays) and Voltages

Mar 02, 2008 | Hyundai ImageQuest L50S 15" LCD Monitor

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