Question about pinouts

wyndle · Post by **wyndle** » Mon May 09, 2005 3:56 pm

I've got a dead portable DVD player (reader related) and I want to hack the LCD for a portable. Short of getting the specs from the manufacturer, how would I find out what connection performs what action? Any specific readings I should look for on a voltometer or just trial and error? I know you can't always count on color coding, especially since this was a cheapo to begin with.

daguuy · Post by **daguuy** » Mon May 09, 2005 4:06 pm

it could be color coded, if not google it. sometimes stuff has labels on the connections

nos_slived · Post by **nos_slived** » Mon May 09, 2005 5:24 pm

I wouldn't suggest trail and error, unless you want to fry it.

soundwave · Post by **soundwave** » Mon May 09, 2005 6:00 pm

Do portable dvd players usually take composite/rgb? Or do they use those other formats like laptops, gameboys, etc?

nos_slived · Post by **nos_slived** » Mon May 09, 2005 10:44 pm

Most have a composite out, but usually use a different format for it's LCD.

Just had an idea. If the cables from the LCD to the board are the same as the cables for the PS1 screen, you may be able to use the PS1 board with the DVD LCD. Probably not though.

sbf · Post by **sbf** » Sun May 15, 2005 4:25 pm

I also have a portable dvd player with a nicw lcd on it.

So what I did was look at the two boards connected to it, one being the amp board for the lcd, and the other board has all sorts of chips on it,

I looked at the second board and googled the info on top of the chips, and discovered that one was an lcd controller chip.

Now this chip has more than 30 pins, so I knew it would be no guessing game, so I managed to google an official datasheet for the lcd controller, which identifies each pin.

I reckon, that as long as the chip is grounded where needed, it has the correct power supplied to it, and the video input is connected to a video source, as well as the amp board having its necessary bits grounded and given power, then the lcd should work.

I havent tried it yet though, so thats all I know so far.

Foxx373 · Post by **Foxx373** » Sun May 15, 2005 5:12 pm

Some DVD players have Video-In on them. I have modded one that normally doesnt have an input to accept composite. If you have a system that can take Video-In one way or another, you can just try to trace the connections and see what you can do from there...