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Forums
4hv.org :: Forums :: General Science and Electronics
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LCD monitor problem :[
Move Thread LAN_403
equilibrium
Tue Aug 28 2007, 04:23PM Print
equilibrium Registered Member #932 Joined: Mon Jul 30 2007, 09:30PM
Location:
Posts: 9
 		This morning I turn on my computer and instead of my monitor lighting up it stays dim and decides its not going to turn on.. I check all the connections and when I turn it on again the screen on again, it flashes to normal brightness and then back to dim. Firstly I check the power supply and it is indeed outputting 12vdc as it says it should. So then I open it up expected to find a severed connection or a fried board and instead everything looks fine. I know you guys aren't envision tech support but I was hoping you can tell what to look for. If need be, I'll upload some pictures of the monitor myself for you guys. Any response is appreciated. Oh yeah and the warranty has expired.
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uzzors2k
Tue Aug 28 2007, 04:33PM
uzzors2k Registered Member #95 Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
 		Try replacing the back-light. Guides should be plentiful on the Internet.
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equilibrium
Tue Aug 28 2007, 05:00PM
equilibrium Registered Member #932 Joined: Mon Jul 30 2007, 09:30PM
Location:
Posts: 9
 		Thanks for the reply. I tried using a different power supply and the monitor is on a functioning but it wont show green. Does this sound like a permanent problem?

edit: the power supply is the same as the original one.
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Steve Conner
Wed Aug 29 2007, 09:46AM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
 		A bad video cable, or loose connector, might explain this problem and your previous one too. Make sure the video cable is good and the connectors are screwed in at both ends.
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Dr. Dark Current
Wed Aug 29 2007, 12:13PM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
 		yes, try to "wiggle" the connectors of your video cable and see if it makes a difference
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equilibrium
Thu Aug 30 2007, 03:19PM
equilibrium Registered Member #932 Joined: Mon Jul 30 2007, 09:30PM
Location:
Posts: 9
 		Thanks a lot guys, should I try switch the cable with one from an older monitor as well? And why is that every time I open the monitor I wind with more extra screws neutral .
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sparky
Thu Aug 30 2007, 04:08PM
sparky Registered Member #530 Joined: Sat Feb 17 2007, 07:56AM
Location: Victoria BC, Canada
Posts: 178
 		sometimes when switching from XVGA to another input the frequency settings from the video card can get messed up. I remember having issues with my older monitor hooking up to a DVI-XVGA port. Until I set the frequency and resolution, I just got a blank screen.
That might just be the problem...anyways, best of luck.
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Conundrum
Fri Aug 31 2007, 10:21PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
 		Check for bad caps. Also check for open microfuses and bad transistors on the CCFL inverter(s).

regards, -A

"Merde!" said Pooh, as the BORG opened fire...
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