| Yankiedoodledandy |
| (regular) |
| Thu Jan 17 2008 07:59 AM |
LED light flashing- Monitor Blank but eventually comes on
|
I have a 3 year old 19 inch Medion flat panel monitor MD7319 which
started acting up around two months ago. The first symptoms were
annoying, but I could live with them. After turning on the computer,
and then the monitor, the monitor's LED next to the power switch would
begin to pulse, and the monitor would remain completely blank. Oddly,
the little MS tune which plays on "bootup" would play, but only
when the LED would pulse on. When the LED turns off, no music is
heard. After less than two minutes, the monitor would finally just come on.
As the weeks have gone by, the monitor has taken more and more time to come on. I now have a replacement CRT monitor, but I'd like to try and fix my flat panel monitor.
Currently, I can let the flat panel warm up for around 10 min, and then if I punch the On/Off button quickly about 10 times, it will come up. I have taken the faulty monitor to another CPU and plugged it in. It behaves the same on the other computer as it does on my CPU. Unless I punch the on/off switch, the monitor will not now come on at all.
Here is a link to a tantalizing web page where people appear to have the same approximate problem as I do, and they appear to be solving it by installing capacitors. Unfortunately, they don't provide any pictures, so I can't figure out what they are doing.
site
Speaking of which, I have two pictures of the power supply board (correct term?) of my computer, which I can't figure out how to post here. One of the photos will show that there is a somewhat large capacitor with a white top which is wrapped in copper which appears to be leaning. Might that be a hint as to what the problem is? I'd appreciate any thoughts on how to proceed.
| greysts |
| (regular) |
| Thu Jan 17 2008 08:59 AM |
|
Re: LED light flashing- Monitor Blank but eventually comes on
|
Quote:That's your first problem, age. I would suggest that unless you are a fully qualified electrical engineer with experience of taking screens apart along with all the relevant test equipment, you leave well alone and invest in a new one.
I have a 3 year old 19 inch Medion flat panel monitor
The power supply on your PC is not relevant as it doesn't supply power to your screen. If it did then the CRT wouldn't work either.
| Yankiedoodledandy |
| (regular) |
| Fri Feb 01 2008 11:03 PM |
|
Re: LED light flashing- Monitor Blank but eventually comes on
|
Good advice for a smart person, but since I'm an idiot I didn't follow it.
I've fixed my monitor by installing new capacitors. Just in case anyone else experiences this "blank screen" problem, Details of how I did the fix are at:
web page
Of course the thing could go up in smoke any minute, and if so I promise to update at the link above.
| Yankiedoodledandy |
| (regular) |
| Wed Mar 12 2008 07:56 AM |
|
Re: LED light flashing- Monitor Blank but eventually comes on
|
It is more than a month and my monitor is still working beautifully. Here are some links to pics regarding the fix.
http://www.flickr.com/photos/22910486@N04/2234972533/?addedcomment=1#comment72157604103239837
I replaced all four of the 470 caps, they are marked pink. I replaced 3 of the 220 caps, they are marked green. I replaced one of the 100 uf caps, it is marked blue. My choice of caps was based upon faulty reasoning, but somehow fixed my monitor. If my monitor goes down again, I'll change all the caps, but for the moment I'm too lazy.
http://www.flickr.com/photos/22910486@N04/2282655029/in/photostream/
The complete details for the Medion MD7319 monitor fix are at:
http://www.medionsupport.com/phpbb2/view...sc&start=15
I'm putting this post up here because the threads at the help site above don't show up on Google. I'll make a note here if the monitor fails. Please bare in mind safety when working on your monitor!!!