I've been looking around Ebay for an LCD monitor to strip and have a question. I'm seeing some great deals on some working screens but they are being listed as having "dark marks" on the screen. When you look at the picture they took it almost looks like a bruise. Does anybody think this might just be the external pieces causing the problem and not the lcd screen itself? Thanks.
Admittedly I chose a poor title for my question. Also after searching the internet I read a few pages about the "bruises" not being repairable. Bummer too because they were otherwise good cheap lcd's.
I don't get what your talking about.. Dead pixels? or something else? Do you have a picture or something?
http://cgi.ebay.com/Dell-1503FP-15-...701471975QQcategoryZ74932QQrdZ1QQcmdZViewItem
Look at the larger picture of the monitor and you'll see the 'bruising'.
I'm scouring the net for a good cheap panel. I know to look for XGA 1024x768, less than 30ms response, contrast ratio 300:1 or better. But what I don't know is whether or not what I'm looking at has FFC cable issues. I'm not good at soldering so I can't afford to get a difficult lcd to strip.
Look at the larger picture of the monitor and you'll see the 'bruising'.
I'm scouring the net for a good cheap panel. I know to look for XGA 1024x768, less than 30ms response, contrast ratio 300:1 or better. But what I don't know is whether or not what I'm looking at has FFC cable issues. I'm not good at soldering so I can't afford to get a difficult lcd to strip.
yeah, those are dead pixels he's talking about. it's too bad they cant be fixed, that would make for a cheap monitor
What exactly happens when the pixels die? Can they be killed by external contact with the LCD (like throwing something at the screen)?
"So What Causes a Dead Pixel?
Occasionally the individual transistors responsible for carrying
current to a pixel will either short out or remain open resulting in
what is called a dead pixel. A "lit" pixel is one that appears as one
of several randomly placed white, red, blue or green pixel elements on
a dark background, or you may have a "missing" pixel which shows up as
a black dot on a light colored background.
"Are bad pixel only a problem on new LCDs or can a pixel become bad
over time. I mean, is the transistor failure due to production or does
failure often (or less often) occur after the LCD is in use."
"Dead Pixels can occur over time."
😉
Occasionally the individual transistors responsible for carrying
current to a pixel will either short out or remain open resulting in
what is called a dead pixel. A "lit" pixel is one that appears as one
of several randomly placed white, red, blue or green pixel elements on
a dark background, or you may have a "missing" pixel which shows up as
a black dot on a light colored background.
"Are bad pixel only a problem on new LCDs or can a pixel become bad
over time. I mean, is the transistor failure due to production or does
failure often (or less often) occur after the LCD is in use."
"Dead Pixels can occur over time."
😉
Dead Pixel Test
http://www.gdargaud.net/Hack/DeadPixels.html
If you notice dead pixels, sometimes you can massage them back to life
-just rub the screen by pressing a finger gently through a rag
around the pixel. No guaranty but sometimes it works; LCD monitors are
fairly fragile, so take it easy.
http://www.gdargaud.net/Hack/DeadPixels.html
If you notice dead pixels, sometimes you can massage them back to life
-just rub the screen by pressing a finger gently through a rag
around the pixel. No guaranty but sometimes it works; LCD monitors are
fairly fragile, so take it easy.
Even if it has some dead pixels, 30 bucks ain't a bad price for a first try. If you completely screw up and blow the whole thing you're only out 30 bucks. Anybody strip one of these lcd's before? Wondering if it's DIY friendly. Dell 1503FP.
Thanks.
This is definitely the best lcd projector forum i've found!
Thanks.
This is definitely the best lcd projector forum i've found!
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