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 Post subject: [LCD monitor] need advice troubleshooting issue
PostPosted: Sat Apr 14, 2012 10:06 am 
8086
8086
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Joined: Thu Aug 28, 2008 7:04 am
Posts: 5
hi all,

I need advice about my monitor, i'm posting here because i'm having a hard time wording my problem on google search.

Here's my problem:
-when I boot my computer, the monitor displays an image for a fraction of a second then goes black
- The green light stays on, as if the monitor is still acknowledging that it's getting a signal.
- if i power the monitor off then back on: the image comes on for a few seconds then monitor goes black again
- IF i keep doing that , (5-20) times it eventually stays on and I get no problems after that.
- if it turns off because of my powersaver scheme, it does it again but only needs 1 or 2 power cycles to work again

- on the instance when it will stay on, the monitor dims a little and then stays on.

I'm comfortable opening electronics but i just don't know where to begin with this issue

I would appreciate any help, if you give me a few leads or terminology it would help me guide my google searches, or if you guys know good "do it yourself" sites since most of my searches lead me to forums where it's just a bunch of BS answers.

Thank you for your time,

things i tried:
different ports on card and monitor
different cables
computer works fine with other monitors


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 Post subject: Re: [LCD monitor] need advice troubleshooting issue
PostPosted: Sat Apr 14, 2012 10:31 am 
Willamette
Willamette

Joined: Thu Aug 12, 2004 9:04 am
Posts: 1022
Your problem is the same one that I had with a Samsung SyncMaster 940BF monitor that my sister had given me to get repaired when it no longer awakened out of sleep mode on her computer (she decided to upgrade to an Acer 22" LCD monitor and gave it to me for helping her correct some other computer issues she was having). I gave it to my uncle to use on his wife's computer as it appeared to be at least partially functional (the same way yours is now), but she got frustrated with having to push the power button on and off repeatedly to get the monitor to display anything when she cold-booted the computer or awakened it out of sleep mode. So my uncle took it to the local "geek" in Stuttgart, KS, who diagnosed the problem as being the monitor's power supply board starting to fail. The "geek" told my uncle that the monitor wasn't worth fixing and tried to sell him a different monitor for $65. My uncle passed and took the monitor back to his place and let me know what the diagnosis was. I did some research and came across this site: http://www.lcdalternatives.com/index.html

I instructed my uncle to take the monitor back to my sister's house in Hays, KS and I would pick it up the next time I was in Hays. I then searched both the site and the associated eBay site and found the exact repair kit (the kit includes all the capacitors and a six-inch length of solder) and even purchased their soldering iron as well. After picking up the monitor from my sister's place in February (and after receiving the repair kit in the mail), I set about repairing the monitor and replacing all of the capacitors on the monitor's power supply board. After about two hours, I put the monitor back together and hooked it up to the DVI port on one of my desktop computers and powered both the computer and the monitor up and the monitor displayed a screen immediately and it stayed going. It has worked like a champ ever since.

Note: When looking for the exact repair kit for your LCD monitor, check out both their site and their eBay site. If you are unable to locate the exact kit you need for your monitor, you will need to open the monitor and remove the power supply board and give them the list of the board's capacitors and their exact specifications (in microfarads and operating voltages) and send them digital pictures of the board as well. If you do, you will get a 50% discount on the price of the kit for your "pioneering effort and contribution". It really is a cost effective solution to the problem you are describing. Let me know how it turns out.


Last edited by pcstudent on Sat Apr 14, 2012 10:39 am, edited 1 time in total.

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 Post subject: Re: [LCD monitor] need advice troubleshooting issue
PostPosted: Sat Apr 14, 2012 10:36 am 
8086
8086
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Joined: Thu Aug 28, 2008 7:04 am
Posts: 5
Thanks for the link and the info, ill check it out and now that i know it might be the power supply it gives me something to research. I appreciate the help.


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 Post subject: Re: [LCD monitor] need advice troubleshooting issue
PostPosted: Sat Apr 14, 2012 8:33 pm 
Willamette
Willamette

Joined: Thu Aug 12, 2004 9:04 am
Posts: 1022
No problem. The information was useful and pretty well complete and I was amazed at how easy it was to fix an LCD monitor. I hope your experience matches mine.


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