Problem taking apart LCD monitor - diyAudio
Go Back   Home > Forums > General Interest > Everything Else > The Moving Image > DIY Projectors

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 5th December 2005, 02:23 AM   #1
mr_quag is offline mr_quag  Canada
diyAudio Member
 
Join Date: Dec 2005
Location: vancouver
Default Problem taking apart LCD monitor

Hey,

I'm trying to make a diy projector usnig a 15" lcd monitor (http://www.futureshop.ca/catalog/pro...0062104&catid=) and an overhead projector.

I tried taking apart the monitor yesterday. However, after takign apart, I checked to see if it was still working, and the bottom 1/3 was working, but the top 2/3 was mostly black with some random lines of green, yellow and blue.

Where did I go wrong? Did I put too much flex into the screen?

I know that when I powered it up for the first time after taking it apart, that two of the three contacts that look like they usually make contact with the metal frame were not touching the metal frame. (http://img27.imageshack.us/img27/797...cklight7zc.jpg - the stuff on the left side of the frame ( picture taken by superdaveumo and taken from Dell 1702FP 17" LCD Disassembled))

Thanks,
Jeff
  Reply With Quote
Old 6th December 2005, 03:25 AM   #2
diyAudio Member
 
Join Date: Dec 2005
Location: tallahassee
dude, i'm with you man.

YOu have to be REAL careful with these things. My very first lcd i had working and apart, put the lcd on my projector, and was in heaven cause i had it working.

then, i put my lcd on my bed to clean up the floor, then i leaned my arm onto it by accident with just 2 pounds of weight or less.

and sure enough, when i tried it again, it had vertical lines all over.

then......... my next TWO lcd's i bought did not work out either, one i tore the flimsy *** paper circuits on the side because samnsung in their infinite wisdom use a **** load of foil paper and glue, then the THIRD lcd was one that could not be used on an OHP due to the position of the ffc cables and boards.

thanks GOD i found this website so now i can buy an appropriate lcd monitor and BE CAREFUF this time taking it apart.

oh, so for you're answer? you're screwed. throw it away and buy another one.
  Reply With Quote
Old 7th December 2005, 04:51 AM   #3
ringram is offline ringram  Canada
diyAudio Member
 
Join Date: Jan 2004
Location: Winnipeg, Canada
I just bought the same monitor, from Futurshop as well. Best Buy was selling it for $30 less, so I got Futurshop to give it to me for the same price.

I got it stripped, and was dissapointed to see that I needed the FFC extension, but other than that, it went ok. My screen still works fine, and it has very good colour and contrast.

As far as your 2/3 screen going black. Too bad. The reason I bought this panel was that I killed my perfectly good BenQ FP531 panel (very easy to strip, NO FFC issues!!).

You CAN repair the lcd panel. But, you need to dish out $100US for a roll of z-axis anisotropic pressure sensitive adhesive that will re-bond the FFC's to the glass. But, that's hardly worth it when you can buy a new panel for just a bit more.
  Reply With Quote
Old 7th December 2005, 05:05 AM   #4
mr_quag is offline mr_quag  Canada
diyAudio Member
 
Join Date: Dec 2005
Location: vancouver
Thanks for your replies...
I probably wasn't really clear in how i phrased my question.... I wanted to know what I was missing out on my first attempt (aside from cracking the lcd panel)

What exactly are the FCC? (I know.....i sound really dumb) would anyone like to just briefly explain, or point out in a picture? I don't seem to understand what others have posted in other threads.

And for that matter...how do you extend the FCC?

Thanks again,
Jeff
  Reply With Quote
Old 7th December 2005, 12:34 PM   #5
ringram is offline ringram  Canada
diyAudio Member
 
Join Date: Jan 2004
Location: Winnipeg, Canada
FFC - Flexible Flat Cable

The FFC is question when making a DIY projector is the on that connects the board on the side of the lcd panel to the one on the top of the panel. When it is installed inside of the monitor case, the circuit boards are on the back of the CCT (backlighting panel). When we strip the panel out and use it for a projector, these circuit boards are in the light path, and need to be moved out of the way. But, the short FFC restricts their movement. This is why we need an FFC extension. Thnk of it as an extension cord. It really is only a short piece (6 " or so) of FFC with a socket on one end to allow you to extend the FFC on the panel so that you can move the circuit boards out of the way.

The Metro panel you (and I) bought needs the FFC extension. I had a BenQ panel before this, and it only had the one circuit board on the top, so there was no need for an FFC extension.

go to www.lumenlab.com and check out there stores link. They sell FFC extensions. I believe that you will need the 16 pin unit.
  Reply With Quote
Old 9th December 2005, 10:27 AM   #6
mr_quag is offline mr_quag  Canada
diyAudio Member
 
Join Date: Dec 2005
Location: vancouver
cool.... thanks! is it okay if i PM you if i have any questions about taking apart the next unit?
  Reply With Quote
Old 9th December 2005, 01:41 PM   #7
ringram is offline ringram  Canada
diyAudio Member
 
Join Date: Jan 2004
Location: Winnipeg, Canada
that would be fine. I just ordered my FFC extension a few days ago and am waiting for it to arrive.

So far, I am quite please with the image that I am getting from that panel (and my pj setup). And it passed the WAF. (Wife Approvement Factor)
  Reply With Quote
Old 9th December 2005, 04:28 PM   #8
diyAudio Member
 
Join Date: Nov 2005
Location: Warsaw, Poland
Quote:
Originally posted by ringram
...and it passed the WAF. (Wife Approvement Factor)



I just hope my P. passes it too.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Event Studio Monitor Problem - Please HELP! jjb22 Multi-Way 6 15th June 2012 09:54 PM
Taking a chance here - problem with DC voltages arnoldc Solid State 5 22nd September 2004 12:23 AM


New To Site? Need Help?

All times are GMT. The time now is 05:54 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2