Question about Scanport N9 19" LCD Monitor

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My monitor shows a blank screen .But when I press the RGB, DVI button, I can see my desktop for a second then it stops displaying. I have to keep pressing the button to change the display type in order to see any screen, but it only lasts for a second between button pressing.

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Moneyshaker, Maybe your screen (LCD panel) is not blank, just BLACK!!! First thing to do is the flashlight test! With monitor connected to a KNOWN GOOD fully booted pc with WIN-desktop showing, reconnect N9 lcd to pc. Then and only then turn on N9 lcd. Note what you see or don't see!! If screen flashes on for 1 sec and goes to BLACK, then shine a bright flashlight 1" form screen at different angles and note if you see or don't see the desktop. This is only a test to check the condition of the unit's power supply and or INVERTER circuit. If you can still see the desktop even though the screen appears BLACK, then the "switch-mode-power-supply" is only partly bad. You did not state age of your unit? Most likely your problem is that the SMPS is detecting a fault in the INVERTER circuit that provides 800 to 1200 volts to light up the "cold-cathode-fluorescent-tubes" that are hung on the rear of the Clear Glass LCD panel and in front of a mirrored reflective surface. GEE wiz If I could take these long, straight, CCFT's and turn them into coils and mate them with an electronic ballast circuit called a CONVERTER circuit (ac to ac) and put them into an oversize light bulb screw-in base I could make millions.... Oh ****, That's already been done!!!! Oh! so that's how those new CFL lamps work. I suspect that your INVERTER (dc to ac) has almost bit the dirt. It will need to be looked at by a tech type person or you could visit Youtube and chcek for video clips that deal with monitor disassembly and or repair of the 2 most common LCD monitor failures. Look under "swollen electrolytic filter capacitors" and BAD capacitors, and Poor soldering and /or poor factory oven REFLOW SOLDERING and or Thermally intermittant soldering connections on printed circuit boards. This is only a guess as to what plagues you monitor. Please rate this response on fixya if it was of any help at all. im'louie12fix on fixya or lmistyrel @aol .com

Posted on Oct 06, 2009

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