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Wavey picture (advanced issue?)

K

kodek64

n00b
Joined
Oct 26, 2007
Messages
35
Hi everyone,

I'm looking for someone with some experience fixing monitors.

I have this old 19" monitor that started displaying horizontal waves on the image. It does it with both DVI and VGA, so it's not an analog cable interference issue (but it sure looks like one). I eliminated any issue outside the monitor by replacing the input device (I tried a different computer), and I even plugged it in somewhere else in the house to make sure it wasn't a grounding issue in the room.

I really don't NEED to fix the monitor, but as a computer/electrical engineering student, I can't let the stupid thing beat me (even if I don't have enough experience or knowledge in the field). I already fixed another monitor that I had by finding a couple of blown capacitors inside of it and replacing them. Had it not been for my persistence, that monitor would have been in the dump by now, where a $5 fix made it work like new. I'll take any ideas or any hints that would lead me into better research. The main point is to learn.

Thank you guys again!

KodeK
 
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Pictures would help. I'm guessing it's a CRT? I've never heard of hoizontal deformations on an LCD.
 
It's definitely an LCD. I won't be able to take pictures right now, though, because I'm half-way through taking it apart :)

On the other hand, I got lucky after searching for "LCD monitor repair" and finding some guy with the exact SAME issue on the exact SAME monitor. Turns out the capacitors on my monitor might be bad as well (it seems that most issues with electronics are with capacitors). I will be giving this a try and reporting back afterwards.

Here's the article I found: http://darkerview.com/darkview/index.php?/archives/876-LCD-Monitor-Repair.html

Thanks again,
KodeK
 
Sorry I couldn't reply earlier. I was too busy USING MY FIXED MONITOR! :)

Took me about an hour to take it apart, but after that, it took me 15 minutes to replace a few capacitors and now the thing is working great. Too bad the fix didn't turn it into a 30" panel, but oh well :)
 
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