Tron77 Posted March 23, 2013 Report Share Posted March 23, 2013 Hi There It is been a wile, but I encountered the following problem: My Lcd (2x20) suddenly got only A black bar on the top row. I have made one change: I made a proper pcb for the power supply instead of a breadboard. Everything works fine, but fine I only got 4.95 V. and 13.91V for 2 SID.s Could this small difference be the problem? Kind Regards, Youri Quote Link to comment Share on other sites More sharing options...
nILS Posted March 24, 2013 Report Share Posted March 24, 2013 Highly unlikely, the 4.95V volts are well within the tolerance of any given LCD (how precise is your meter anyways :wink:). Is the black bar just one pixel or is the entire first row filled with black blocks? Quote Link to comment Share on other sites More sharing options...
Tron77 Posted March 24, 2013 Author Report Share Posted March 24, 2013 (edited) nIls, Thanks for the reply. It Is the complete top row. It is A Oriental Display DM2002B. And I had some problems with the CAN bus interface -it could not detect my second sid- although I followed every step for the upgrade. But every else worked fine and it did not bothered me that much at that point. I tested the lcd back in 8-bit mode on an older Pic-core and that worked fine, so it is not fried. Then I looked up the specs for the screen and thought I found that the problem in wrong wiring (I wired it according to the 2002C instead to the 2002B type). But now Backlight and brightness are not working and I still have the blackrow, so the previous should have been the right one. thanks in advance, Youri [edit] I also did a complete reprogram of Mios 1.9 and then the Sid 2 Application with the only thing that uploading with LCD gives the error #11 midi-in Overun. And without not. [edit2] How should I read the numbers on the LCD when the are not on a straight line? so I have 2 lines of 8 next to each other where, looking from above, the left bottom has 1 and the top right has a 16. I soldered from left(1)-right(2), left(3)-right(4), etc. again it did work, but just to be shure. Edited March 24, 2013 by Tron77 Quote Link to comment Share on other sites More sharing options...
TK. Posted March 24, 2013 Report Share Posted March 24, 2013 How should I read the numbers on the LCD when the are not on a straight line? so I have 2 lines of 8 next to each other where, looking from above, the left bottom has 1 and the top right has a 16. I soldered from left(1)-right(2), left(3)-right(4), etc. again it did work, but just to be shure. with the other way around you would have already fried your LCD ;-) Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
Tron77 Posted March 25, 2013 Author Report Share Posted March 25, 2013 Aha, so I still have some luck over:) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.