Solid blocks when no update in 2-3 seconds

pr0xZen · Post by **pr0xZen** » March 19th, 2005, 11:18 pm

I recieved my LCD, prewired a week ago. I've run it since. It's a backlit 4x20 HD44780. Now, the last days I've been having problems. (Only used smartie 5.3) ... When there is static text (no change in 2-3 seconds) or no text, in the first 4 "squares" of a line (has to be all 4 squares) - these squares "fills up" - they show solid blocks.

I bought a PCI controller for the LCD, as I have a parallel printer - but I couldn't find out the address of the pci controller, nor how to change settings from ecp to epp - so I run the LCD off the mainboard and the printer off the pci controller.

Any ideas?

Btw,
I also usually get weak horizontal lines down random squares on a line, when that line is scrolling text or updating/changing numbers very frequently.

Post by **limbo** » March 25th, 2005, 12:04 pm

This seems to be hardware or cabling problem!

Check the cabling and the display for short circuits, in addition you can try to use LCD Smartie without the PCI card present on your system (just in case of a conflict).