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Please help, corrupt display (MX224)
Posted: Tue Jul 20, 2004 4:14 pm
by Synapse
No matter what I do, the display shows gibberish characters. I have tried to install the drivers again, updated to the latest version of LCDC, etc. No luck.
This display worked great for almost a year. Now the display is very dim and displays weird characters. When I unplug it from the USB connection and plug it back in, I don't even get the default 'Matrix Orbital' display text, just junk. You see each 'cell' of the display light up for a fraction of a second and then it dims and shows junk.
Any help or ideas about what I can do would be great.
The following shows in my device manager:
Ports (COM & LPT): Matrix Orbital MX2xx USB Driver (COM3)
Universal Serial Bus controllers: Matrix Orbital MX2xx USB Driver
Driver Info
Date: 2/1/2002
Version: 1.0.2101.0
Posted: Tue Jul 20, 2004 4:22 pm
by Tom
What revision of PCB do you currently have?
Posted: Tue Jul 20, 2004 4:26 pm
by Synapse
I'm sorry, PCB?
Tom wrote:What revision of PCB do you currently have?
Posted: Tue Jul 20, 2004 4:30 pm
by Tom
There is a number on the backside of your LCD display. It's the side that shows all most of the electronic components. There is a Revision number shown on there. An example is Rev 1.4 . Can you please tell me what the revision number?
Posted: Tue Jul 20, 2004 4:35 pm
by Synapse
Sorry, had to pull it out:
REV 1.0
Tom wrote:There is a number on the backside of your LCD display. It's the side that shows all most of the electronic components. There is a Revision number shown on there. An example is Rev 1.4 . Can you please tell me what the revision number?
Posted: Tue Jul 20, 2004 4:42 pm
by Tom
Can you try the following instructions?
1)Unpower your display
2)Place a jumper on pin 6 and 7
3)Power up your display again
4)The Baud will be set at a default 19200
Refer to the link, which is the manual, below. The instructions are on page 7 of the pdf file.
http://www.matrixorbital.com/manuals/LK ... USB_01.pdf
Posted: Tue Jul 20, 2004 4:54 pm
by Synapse
looking for an extra jumper ...be right with you...
Tom wrote:Can you try the following instructions?
1)Unpower your display
2)Place a jumper on pin 6 and 7
3)Power up your display again
4)The Baud will be set at a default 19200
Refer to the link, which is the manual, below. The instructions are on page 7 of the pdf file.
http://www.matrixorbital.com/manuals/LK ... USB_01.pdf
Posted: Tue Jul 20, 2004 4:58 pm
by Synapse
Ok...I have set a jumper on pin 6 and 7 and things look the same so far.
Synapse wrote:looking for an extra jumper ...be right with you...
Tom wrote:Can you try the following instructions?
1)Unpower your display
2)Place a jumper on pin 6 and 7
3)Power up your display again
4)The Baud will be set at a default 19200
Refer to the link, which is the manual, below. The instructions are on page 7 of the pdf file.
http://www.matrixorbital.com/manuals/LK ... USB_01.pdf
Posted: Tue Jul 20, 2004 5:09 pm
by Synapse
FYI...I can enter characters and they show on the screen through HyperTerminal.
Tom wrote:Can you try the following instructions?
1)Unpower your display
2)Place a jumper on pin 6 and 7
3)Power up your display again
4)The Baud will be set at a default 19200
Refer to the link, which is the manual, below. The instructions are on page 7 of the pdf file.
http://www.matrixorbital.com/manuals/LK ... USB_01.pdf
Posted: Tue Jul 20, 2004 5:34 pm
by Synapse
Ok...I did some tests...and downloaded the Matrix Orbital LCD Tester.
Things seem to be working now...not sure exactly what I did...but I did a few things with the Tester, including changing contrast etc...disconnected with the Tester and turned LCDC back on...now it is working.
Posted: Tue Jul 20, 2004 7:11 pm
by Tom
Glad to hear it works now. If you have any problems again let me know.