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Go Back   Apex Community Forums // PC Apex Forums // PC Apex Troubleshooting // Display Hardware

Display Hardware LCDs, monitors, projectors and more. If you have an issue with some sort of display device, this is the place to post about it.

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Old 29-April-06, 12:14 PM   #1 (permalink)
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Default NE1 used a Laptop LCD powered off computer PSU for alt. display??

So am not coming into this situation blind, I have done my research.

Here is the problem:
Laptop LCD / PSUs run at a lower voltage than a normal PC, something thatÂ’s lower than 110v. What I am looking to do is mount this Toshiba 15" LCD to the side of a case for an alt. display. I understand the voltage difference and know what happens if you don't resolve it (burn out LCD). I have a great deal of resources and friends to help out with this. So from what I understand I need to get the specs off the back of the LCD and inverter to see what the proper voltage is for that particular LCD/inverter. The question now is how can I rig this to work??? The LCD has two power sources, the one 2 wire ribbon that is the main power, but the other ribbon carrying the video signal is giving a little power as well. So how do I go about this? Can I simply put some resisters inline with the main power in order to reduce the voltage on the main power?
What type of connection should I use to splice into? S-video/DVI/Serial video jack? I know someone has done this, it can't be that complicated, someone show me the way please!!!


This rig is going to represent my Counter-Strike at QUAKECOM this summer in Dallas. I want it to be able to use this LCD display off the side to play some sort of SNES emulator. I want to take an old Nintendo case and use that as an external HDD enclosure and route USB cables through it so that you can plug in some joysticks to the Nintendo. It will be sweet and totally within my capability if I can get this damn LCD to work!
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Old 29-April-06, 12:18 PM   #2 (permalink)
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It cant be done unless the original laptop is inside the case running the LCD. Many people have tried using laptop screens for mods...it just doesn't work, sorry to let you down.
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Old 29-April-06, 02:02 PM   #3 (permalink)
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if it's standard LVDS some mini itx mobos and mobos with LVDS support MIGHT run it. running off whatever video card would need some unicorn adapter that is something around $400. you might as well get any LCD monitor and strip it for your purpose.
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Old 29-April-06, 03:21 PM   #4 (permalink)
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Put the PSU inside the case?
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Old 29-April-06, 05:38 PM   #5 (permalink)
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Gonna be tough to do if you don't have access to the technical documentation. If you take apart the housing the LCD is in, the screen will have the OEM make/model on it. Go to the OEM website and download the tech specs, if availbale. Here's an example:

http://document.sharpsma.com/files/L...8203A_6207.pdf

All the pinouts, even the actual logic gate circuitry is there. All you gotta do is figure out how to get the proper signals and voltages where they should be.
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Old 30-April-06, 02:07 AM   #6 (permalink)
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Quote:
Originally Posted by Nerdz
Put the PSU inside the case?


its integrated into the laptop mobo, even if that was an option, its fried...
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Old 30-April-06, 11:35 AM   #7 (permalink)
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Ok I think I understand what your trying to acomplish. You want to be able to use the lap top LCD and CCL on a normal comp. IM sorry to disapoint, but its impossible to do (well, there is a kit however, but I forgot how much it was). But what you can do is use a PS1 or gamecube monitor and hook it up to the RCA out of a video card.
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Old 30-April-06, 08:33 PM   #8 (permalink)
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Or buy a small LCD monitor, perhaps even used; if you're lucky, you can find one designed to take an external power brick. Build a cable to replace the power brick and drive it off a Molex; that's how the LCD I have is rigged.
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Old 01-May-06, 07:47 PM   #9 (permalink)
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Quote:
Originally Posted by greebler
its integrated into the laptop mobo, even if that was an option, its fried...


Uhhh, you say you have a lot of friends and resources to help you on this. If you follow my advice, and determine the OEM of the LCD display, you will probably be able to find the complete electrical and physical characteristics on the WEB.

Then get the one friend of yours who knows the most about electronics to help you get the proper voltages converted from the computer PSU (hint: DC to DC converter). Then, you need to get the video signal to the LCD.
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