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Monitor turning off

I brought home a flat panel from work that we no longer use. When it is turned on, you see the desktop for a brief second and then it goes black. If you turn off the monitor and turn it back on, you see it again for only a second before going black again. I have check the power supply and connections. I have tried it on different computers and with different power supplies and cables. What am I missing? Any ideas?

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  • Dan Fields Oct 05, 2007

    It is a Dell flat screen monitor. It does not have a model # anywhere on it!

  • Anonymous Nov 26, 2007

    I have the NEC 1760NX which is reputed to be the same thing. I have precisely the same problem. The display worked okay yesterday so I'm thinking it's a heat problem, although I took the case off and felt around :) and I can't find anything like that.

  • lapeen2 Jan 28, 2008

    Same problem. Dell 19" widescreen.



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Check for swollen 470uf 25v capacitors in inverter circuit

Posted on Dec 05, 2011

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That is to say, my NEC monitor is supposed to be the same as the Neovo F-417. I just went in and tapped on many of the components on the backlight inverter (while the power switch was off - this display has a real power switch on the side) and then turned it on and now it's working. I suspect the specific problem with this specific display (or displays which are the same product with a different label) is actually a bad solder joint caused during the manufacturing process, and that the actual fix (mine's working right now but I don't trust it to continue doing so of course) is to reheat solder joints on the board. If we are lucky this bad joint is one of the ones for a component that mounts to a through-hole and not one of the SMT ICs.

Posted on Nov 26, 2007


You might wanna try the same as posted somewhere else in this forums and lower the screen brightness. I am in the same situation as you (although the screen stays on for 3 or 4 minutes).
if this doesn't work then I'll suggest you hit the screen reasonably hard on the floor (given that you didn't pay for the screen and it would have been discarded anyway) and see if it works... x

Posted on Oct 23, 2007

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