Question about LG L1932TQ LCD Monitor

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L1932TQ monitor flashes on, then blacks out

I had a couple of brown outs recently and the system was on, I thought I had my monitor plugged into the UPS but I did not. When I went to turn on the monitor I get a quick flash of the screen and then the monitor goes black, if I click the monitor off then on I get another quick screen flash then black again.

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I would try connecting it to another computer or Laptop if you can to see if the problem is the same. You might also try disconnecting it from you computer and turning it on, it should “banner”(show a logo and or a no signal message). If it behaves the same way just a quick flash…. Sounds like its toast.

Posted on Jun 20, 2009

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I hit the button to turn it on it will stay on for awhile and then it will start beeping really loudly an shut off


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If the UPS does not shut down with all devices disconnected from it, Power off your monitor and look on the back of the monitor for a label which will tell you the amount of power it requires (probably 100 watts or less). Plug the monitor's AC power cord into your UPS and turn on your PC and monitor. With the UPS plugged into the AC line you are not using the internal battery and the UPS should remain on and your monitor should be working. If it shuts down you have an internal problem with the UPS.

Now unplug your UPS from the AC line (simulating a power failure) Your UPS is rated at 350 watts. Accordingly it should easily support the 100 watt load of your monitor. If the UPS continues to provide power to the monitor for 1 or 2 minutes down it's an indication that it's working properly and the COMBINED LOAD of your monitor. PC etc. when plugged into the UPS is exceeding the 350 watt capacity of the UPS. You will have to disconnect 1 or more devices from the UPS.

NOTE: Never plug a laser printer into an UPS.

If the UPS immeadiately shuts down after disconnecting it from the AC line with only the monitor plugged into it you have a bad battery.

If you found this information to be helpful to you please return to the FixYa website and rate me.

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I have a CyberPower 725SL UPS. Shortly after turning it on, it will beep as if AC power was lost and the green light goes out. I checked the battery and it's good. I'm assuming something went bad with...


Couple different items to check.
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  • Replace the battery.
If you turn the unit on when the battery is plugged in and does not keep a charge you can almost be sure it is the battery or the charging circuit not maintaining the battery.

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unplug the cable from the comp and plug it in to the ups i/p
take the iec male to female cable that came with the ups and plug male into ups o/p and then female into your comp

turn on ups then turn on comp

thats it

hope this helps

thanks for using FixYa

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If you are talking about a used UPS, i would not bother with a used unit.
I find if they are used 24hrs a day, when the electricity is tripped and the ups kicks in, they only last a couple of minutes.
I would plug just the pc and monitor into the UPS sockets, and plug everything else into the ordinary sockets. You will get alot longer out of the battery

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you can program your power bottom to hibernate, and connect the screen direct without the UPS, so you get more time...then when the electricity goes off, without seeing the screen just push the power bottom to hibernate.

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