Question about LG Flatron L1750S 17" LCD Monitor

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LG Flatron L1730s

My problem is that the monitor works but not when you want it to.
The screen when first turned on blinks for less than half a second and then goes dark again. 
 have to turn the monitor on for at least 1hour before i want to use it as after one hour elapses, it begins to work. however, at somepoint, it has to go off right? i can't leave it on forever! next time of usage the same story gets told.
every time the screen is turned off and on it blinks once and then turns black. I know the CPU works as i see it flash when the screen does. Now it takes 5 hours to come on. so now i have to turn it on 5 hours before i want to use it.
i just want to know if this is worth keeping and trying to fix? or should a just buy a new monitor? even if anyone has any ideas as to what is wrong with it i shall be very grateful because at the moment i'm lost with this thing
thanks jeremy

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  • Anonymous Feb 28, 2009

    The same problem

  • Anonymous Mar 03, 2009

    Mine does this, but I never turn my monitor off...the problem starts after I haven't used the computer in a few hours. I have to turn it off and on over and over while it just blinks, after a few minutes of this it will stay on. I'm worried it eventually won't come on at all.

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  • 6,966 Answers

Hi,

Sorry for the delay in responding, it is just now that I was able to view your concern. Acouple of ideas:

  • possibly the CCF (cold cathode florescent) lamps, the inverter and/or the main board;
  • the blinking light is significant, it could indicate loss of video signal or internal protection kicking in;
  • possibly heat related, check for any of the capacitors bulging or leaking.
This of course would require opening the unit, a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings. Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

If you are considering a DIY, pls reference a service manual or a schematic diagram, that would be chassis CL-82 for an LG L1750S. Foremost to check would be for the presence/consistency of both the 12 and 5 volts,.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Sep 27, 2008

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