Question about Dell UltraSharp 1704FPT 17" Flat Panel LCD Monitor

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Display lights up then quickly goes dark

I googled this problem a while back, and somehow I found an article saying that this is a frequent problem with the backlight inverter with this model, but have been unable to find anything about the problem since. What happens is, when I turn it on, the display will quickly flash what I should be seeing, then it goes dark.

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It could be your LCD backlight giving you problems. With the computer on and the monitor power LED green shine a flashlight in the lower left hand corner of your screen. Look for the ?Start? button, if your backlight is not working you?ll see a faint ?start? button if you look closely. If you do see the ?Start? button then either your backlight tube is bad or more often the inverter board is bad. Let us know if you have any other questions and please don?t forget to rate this posting.

Posted on Jul 15, 2007

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Posted on Jan 02, 2017

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1 Answer

My Samsung LC55C630's backlight sometimes turns off. Recently it has been consistently turning off when I switch HDMI sources. Do I need to replace the backlight inverter?


have you been in the back could just be lose connector from power supply to inverter board worth a go or you may see some think else standing out leave tv off at least 10 mins or discharge it if you know about tv witch it sounds like you do good luck

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Hi I just bought a LG M2362D tv monitor and somehow the backlight level (feels like the backlight) will change to very dark automatically every 5 or 10 minutes then back on bright again in 1 minute does...


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2 Answers

Got no picture only sound


Hello,
You most likely have a backlight issue with this TV set. Could be the inverter circuits for the backlights. The inverter is the power supply source for the backlights. there could also be a screen driver problem. This would entail changing the entire board. You should call in an authorized LG repair center to check this set out for you. Good Luck and please let me know what you found out about this TV set.

Jun 03, 2010 | Samsung LE26R73BDX 26 in. HD-Ready LCD...

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Where can I find instructions for replacement of the backlight inverter?


It's hard to find a step by step instruction on how to replace a busted backlight because of different model concerns.

If somehow you manage to get through on your lcd mainframe with careful disassembly of the back cover.. then you should watch this. A 2 part recorded video on how to remove a backlight inverter for a laptop. And a video on how to Install a laptop inverter here are the 3 links:

1. http://www.youtube.com/watch?v=xff-ztgAXlw&feature=related
2. http://www.youtube.com/watch?v=J9sv_tEjong&feature=related

3. http://www.youtube.com/watch?v=6lJhZPHN5iU&feature=related



Hope you learn watching.
Much appreciated if you rate this help.. thanks






May 21, 2010 | Toshiba Satellite A205-S5812 Notebook

1 Answer

How to FIX


Televisions have protection circuits which prevent full power-on if a fault is detected in a high voltage/high current circuit such as the backlight inverter.

Some googling on 'Sony Blink Codes' found that 4 blinks is 'backlight failure'. A common failure in LCD displays is the backlight inverter board which is a transformer similar in function to a fluorescent light ballast, as the backlights are fluorescent lamps.

If the screen color is getting pinkish/reddish, that's a sign that one or more of the lamps themselves are going bad.

Since multiple lamps are connected to (typically) two inverter boards (a primary and secondary board), I am fairly certain that the blink code refers to a failed inverter board and not a failed lamp.

Oct 19, 2009 | Televison & Video

1 Answer

17 month old set; Picture gone. Direst TV repairman says it's the backlight bulb. Others say it's a Board.


it might be inverter board it is not backlight bulb according to my expertise bcoz once it goes off it dont come back

but u see inverter and CCFL backlight bulb failing symptoms are so same that u cant simply distinguish but i am sure u have one of these two problems inverter is more chance

Kindly rate me well

Regards

Zohail

May 23, 2009 | Vizio VX42L 42 in. LCD TV

1 Answer

Gateway inverter board replacment


Hi,
The inverter board is the circuit board inside the screen, with all the capacitators etc that controls the backlight. It looks like this:
http://cgi.ebay.com/GateWay-7322-7330-7340-7410-Inverter-83-120082-3000_W0QQitemZ290289050786QQcmdZViewItemQQimsxZ20090114?IMSfp=TL090114125004r29293

You can just google 'changing inverter board gateway' and see if you can find the closest guide to your model..
I found this one 4th on the list..
http://www.pcgeekdom.com/2006/02/replacing-laptops-lcd-backlight.html

Hope this helps

Chris (ziraffa)

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LAPTOP ZT1000 SCREEN IS DARK SEE JUST WHEN IS SUNNY


your problem is a faulty ccfl BackLight Inverter, the display uses the backlight to illuminate the lcd screen, the inverter is used to illuminate the cold cathode light in the back of ther lcd theirs countless places to laern about it on google.
They are cheap to replace google your model with inverter at the end..

The backlight is dead thats why you can only see when in the sunlight.

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Olevia 237V Backlight problems


Check inverter supply voltage, (should be constant and stable) if found ok, then inverter or back-light tubes are suspected.

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