Question about HP Compaq FP 7317 17" Flat Panel LCD Monitor

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Flickering Monitor I have a 3 yr old compaq system with an FP7317 LCD monitor. Recently it has started flickering colors from purple and blue to orange at times. It is an on and off problem and doesn't do it all the time. What might be causing this? Is there a possibility my monitor is going out?

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  • Anonymous Feb 12, 2009

    My LCD monitor has columns of regularly spaced, flickering red dots, across the screen. It only appears on dark backgrounds and some web pages.

    I have upgraded drivers on the FP7371 and the ATI video card.

    No improvement.


  • charbar518 Feb 12, 2009

    My FP 7317 LCD has red flickering spots in regularly spaced columns right across the screen. Updating drivers has not helped. They show up most on the desktop and some dark web pages, some times.

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Dear Thunderforce -

I've run across this issue quite a few times with LCDs, and generally there are two possible causes: Either the Power Supply is bad(best case), or the LCD's Inverter is bad(worst case). Most LCDs now use a standard computer/monitor power supply - usually a thick cable, with three prongs on the male end and three slots or holes on the female end, same as would be used to give power to the computer. If you have an extra cable, you should try testing it with the LCD. If the screen works, fantastic, chalk it up to a broken power supply.

Otherwise, you'ld have to open up the display to replace the Inverter board. The LCD will have three or more circuit boards in its casing; One that handles input, one that handles power, ocasionally a separate board for video logic, and a slim board that connects the other PCBs to the screen itself. This slim board is the Inverter, and will have to be replaced.

The issue at this point is cost of repair vs. cost of replacement. An LCD inverter can cost anywhere from 40-140 bucks(on average) even on Ebay. Most big-name computer stores offer a comparable LCD for around the same price after rebates, or on sale. Second hand, I've even seen a few 17" LCDs for as low as fifty bucks.

Hope this helps!
-thinstatic

Posted on Jun 11, 2008

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Flickering on the screen can be caused by defective hardware in the computer or by improperly installed software, but it can also be caused by interference from external devices. The following examples describe situations in which your screen could start flickering:
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