Problem with 10-bit A/D conversion - PIC18F2455 - LCD

[Kuba230]

I atached photo of my wrong LCD. I do not know, what is the problem with LCD.
Display is marked as MC10621E8-SYL, *W 4034
But after changing, everything is OK.

[Heckler]

Hey Kuba230,

Thanks for posting the picture. So to me the picture says a lot... It definitely shows a problem with the LCD but it also shows that your code is working, more or less.
I would submit that if others that posted comments about checking your register settings and AD setup would have known your display looked like that they would have suggested a problem with the LCD before talking about your code setup.

It's obvious that you were smart enough to recognize that there was an issue with the LCD and you replaced the defective display.

The reason I am focusing in on the idea of accurately describing your problem is because I have spent the last several days working with a new electronic technician and trying to teach troubleshooting techniques. It has become clear to me that it is very important for one (anyone) to really think about what the symptoms in a given circuit are telling you, and if you are inviting others to make suggestions then the more accurate you can describe the problem then the more accurate will be the feedback.

Really just an academic point of learning to better communicate both with others and with ourselves.

cheers
dwight