Unusual LCD screen, little help?

SNESArcade · Post by **SNESArcade** » Tue Apr 26, 2005 9:04 am

Hey everyone, I just happened to stumble across what could be a great LCD screen, if I can figure out how to wire it. We had a compaq internet terminal laying around in a closet (they don't offer service/support for it anymore so it's useless at this point). So I got the brilliant idea to take it apart (engineering student). I'd love to put this nice 10" LCD screen to use, but the wiring is a little wild. It was connected to the main board with 1 harness of about 14 or 15 20g wires (mostly odd pastel colors), and then it has a secondary board on the bottom of it with dimmer and contrast controls. This board was connected to the main with a 6 wire harness (I think), all red, black, and white (so I'm assuming power/ground/? for both the LCD itself and the backlight?). I can prolly get pics up in a couple weeks when I can get back home. Until then, if anybody just happens to know LCDs in and out and recognizes this setup, I could use some enlightening please! All I really want to do is make this bad boy run off 12V DC power (I'm guessing it might already?), and recieve input from some composite or S-Video jacks.

SNESArcade · Post by **SNESArcade** » Tue Apr 26, 2005 9:06 am

By the way, on a side note, and EE buddy suggested the pastel harness might correspond to VGA? Just thought I'd throw that out there.

Thanks all!
JD

Mr. Cool · Post by **Mr. Cool** » Tue Apr 26, 2005 3:53 pm

Cant really help you, but a 10inch screen would be sweet. Are you gonna use battery, or just like plug it into a car's cigarette lighter?

SNESArcade · Post by **SNESArcade** » Sat May 14, 2005 10:49 am

Well, I had intended to run it off the car's electrical system, but now that I've gone over some dimensions it turns out it won't fit in the dash. Just too big

but I'm thinking about it as a secondary monitor for my laptop.

SNESArcade · Post by **SNESArcade** » Sat May 14, 2005 11:32 am

Ok, after looking at it some more, I've counted the harnesses. The pastel one has 27 (

) little wires, plus a main ground. It also has a lable wrapped around it, "Compaq Computer Corp. Z0094" and a barcode. The other, coming off the small dimmer board, has 5 white, 5 black, and 1 red wires. I'm gonna take it apart again and take some pics.

SNESArcade · Post by **SNESArcade** » Sat May 14, 2005 12:30 pm

Well, I was going to add pics, but I don't think I can post attachments? I don't really have a place to host pics. Any ideas? I think the VGA idea may be out, theres a LOT of little wires on this sucker.

nos_slived · Post by **nos_slived** » Sat May 14, 2005 12:43 pm

How to post pics.

tom61 · Post by **tom61** » Sat May 14, 2005 3:13 pm

Probably a TFT based on what you said. Try to find the datasheet for the LCD (there should be a sticker on the back ID'ing the manufacture and model). If it is a TFT, you might try this. No one that I know of, beyond that guy, has made the circuit work, but with you being an engineering student, you might just stand a chance of getting it working.