Matrix Orbital Corp

Hi all,

I have an LK204-25 sitting on my lap now, in peices. Thinking that it'd be easy to change the backlight colour and not realising it used a LED array instead of a single LED, I proceded to take off the LCD itself (easy), then the little white light diffuser thing. Bad Idea. WIth it came a rubbery/plastic layer, about 2mm thick, and after it came off, LEDs no worky. Now I fully accept that I may have just killed it, but I was wondering if there was any way to revive it, maybe by changing it to a single LED type thing. I guess I could get some Surface Mount LEDs and change all of the current ones, but that'd be a royal pain and i'm not sure how the current ones are wired.

If anyone could help I'd be greatly appreaciated. Otherwise it looks like i'm unsoldering the serial backpack and trying to get it working with a parallel LCD I can get here! (Matrix Orbital stuff is expensive in Australia, and extremely hard to get).

Well... what you removed is the backlight... couple of options... get your self another LCD with a backlight and use it. Maybe get a El backlight (will require modding) or three, send me an e-mail support@matrixorbital.com and I will let you know the price of a new backlight..

http://www.icehardware.net/guides/invert_lcd/

good guide to inverting...

Can you take any pics to show me what you've done? Those plastic strips you talk about sound like the conduction strips from controller to lcd panel - they should have nothing to do with the backlight?

r.

Argh! I just type a huge reply, only to forget to put in my username and password, so now I have to type it all again. Dang.

Anyway..

I don't have a digital camera so I can't take photos sorry, but i'll try and describe it better with the aid of some pictures.

I hope ICEHardware don't mind me linking to this photo directly, if they want me to make a mirror of it, I'll be glad to.



In that picture, taken from this guide, the white thing is the actual backlight. There is a cover over it (the actual white thing), which I expected to be a kind of diffuser, spread the light from 1 or 2 LEDs over the whole surface. If it was like this it'd be easy to change, just unsolder 1 or 2 LEDs. Under the white cover, there was the Rubbery Plasticy Stuff (from here on in i'll just call it 'stuff') which came off with the cover. I don't have a multi-meter so I can't tell if it conducts electricity or not. Anyway, under the 'stuff' was an Array of 4 x 14 LEDs, and after the 'stuff' was gone, the LEDs wouldn't work.

I plan on picking up some cheap LEDs, maybe 4, and seeing if I can unsolder the old array and make something up. If not i'll be shooting Henry and email and seeing about getting another backlight similar to what I just wrecked.

I hope that was clearer than my first post.

It certainly was... I see what you've done now and I'm tempted to take the nk I have infront of me apart to see better. Maybe later

r.