Question about Liquid Video L17LCD2 17" Flat Panel LCD Monitor

4 Answers

Flickers on and off

My LCD too, flickers on and off, I have gone to the safe mode using F8. However, I am unable to see the screen long enough to scroll to the right line. How do I go to the right section without seeing the screen or is there another way to get there? I have a laptop but I wouldn't know how to connect it to my laptop and have the monitor connected at the same time? I am optimistic that the solution that was mentioned on11/10 could work if only I can access the screen long enough to move forward. thanks I had the same problem and replaced the C922 cap. It's now a few months later and the problem is back, guess I'll try the higher voltage cap.

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It is unable to process quick rendering from a bright scene to a nearly pitch black scene. Can you connect another monitor to the computer to do the following.

Check your refresh rate (under desktop properties if using windows) and try setting it to 60Hz. LCD monitors have a slow enough "decay" rate that you will not see any flickering at that lower rate like you would with a CRT monitor.

If it was a Dell monitor from (but not including) 24" and below, it could be what is called a "CCFL failure" which is just when the lamps on it are defective or the main board inside. If it flickers and turns off but the power button is still on... I would give it a 90% chance that it is a "CCFL failure". If it only flickers but doesn't turn off, test the main board before replacement, but there is a strong possibility that could be it. If it is 24" and up, well it could still be the same thing, but it's a little more complicated. DO NOT TRY TO DO IT YOURSELF... or you might wanna consider getting a new monitor. It doesn't matter how careful you are, you can potentially mess it up. Electrostatic Discharges can make a French Fry out of your main board. Which would make it useless... obviously. Well, the best of luck partner.

Posted on Mar 29, 2008

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  • Master
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You can try lowering resolution on your pc and seeing if you still have the problem. You will need a spare screen to fix your problem, even an old crt will do.

regards

Posted on Mar 29, 2008

  • Ginko
    Ginko Mar 29, 2008

    Well, there are two different problems posted here. If you are the one who replaced the C922/C822, you may have a problem that it is not related to the C922, just test the capacitor. Check nd test also the monitor power unit.

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  • Master
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I have the same monitor and the power light was blinking on and off regardless of whether it was plugged into a source or not. I could see an image of the desktop cycle on briefly in conjunction with the power light. I repaired my monitor by changing out a 1000uF/16v cap (C922) and everything is working great."

I would suggest changing the caps to a higher voltage rating if you have one that will fit. I installed 35V 1000uF Cap for C922. My unit also had a 470uF cap next to C922 that was bulging so I changed it also.

Its an easy repair if you can solder at all. The hardest part is getting the back cover off. Remove the 4 screws that hold the base bracket in place and carefully slide it out. Then the other 5 screws on the back. (One under base plate you can't see till base is off.)

Then you can remove the metal sheild and acess the PCB's. 2 Screws and the HEX standoffs at the VGA port need to be removed and it will slide off. The inverter board is the one on the left.

Even at Radio Shack prices these caps should cost less than a couple bucks. I took mine off a couple junk boards I had. Replace any that are bulging at all.

Many thanks to the person that threw this monitor in the dumpster for scrap metal at our local tranfer station. Works great.

Posted on Mar 29, 2008

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  • Liquid Video Master
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Are you sure its the only cap witch is faulty? maybe another one has broken down / about to.

Posted on Mar 29, 2008

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