Sorry for the delay.

Tried it on a Compaq I have here running as a webserver and it does the same on that.

Totaly unresponsive till i pop the serial cable out then plug it back in, the last displayed text is still on screen so it appears to be an issue with contrast. But ntill that cable is pulled ...

I have several pc's here I'll rig it up to one of them and give it a try.

Out of interest if it works on the other machine is the only solution going to be a diferent motherboard??

Thats the kind of thing I'm after Mat and the buttons would do diferent things depending on whats been asigned to them in that group.

group one may be lighting and onvolve turning gpo's on and off
group two may be winamp and change tracks etc.

Motherboard - Tyan Tiger mp
cpu - dual Athlon MP1800
ram - 512mb in 2x256mb ddr
os - windows xp pro
no other devices on serial ports.

Can't think of anything else that may be relevant

To have switch's dependant on what screen is showing, what I'd like is this.

two buttons to cycle screens forward and backwards.

Several other buttons, but what these do will depend on the screen displayed.

Screen one, fan control, switches turn fans on and off.

Screen two, light control ...

Sorry I've not got back I've been rather busy :sad:

It boils down to this, when I power my machine on the backlight comes on and thats it, it's completely unresponsive to ANYTHING, untill I unplug the serial cable (at which point the welcome message appears) then plug it back in. From this point ...

Grats on the new LCD

Out of interest what was the contrast problem you had and how did you fix it, I still have a problem with mine always far to low unless I pull out the serial cable and pop it back then it's fine.

Anyone lend a hand????

Pretty please.

Hmm, this is strange..well to me :smile:

From power on wether just machine or pulling the power on the display I get :-
Contrast - no responce at all
Matrixdemo - no response at all
LCDsmartie - no response at all

Now if I leave it plugged in and pop the serial cable out then back in I get, all ...

I have an LK204-25PC, bought it about a week ago all up and working apart from one thing thats begining to annoy me.

The first time I used the display the contrast was fine, second day I turn in the system and the display was blank. AFter lots of messing around I found if I unplug the serial lead ...