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Bug in 320x240 lcd module?

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amdatlon

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Hello, sorry for bad English.
I have a problem with display 320x240 Ampire 320240A1
Whatever type the screen, one area remains empty. Manage it
with microcontroller Pic18f6722.
lcd_big.JPG
Please tell me where to look for problems.
I think that is added hardware, but I'm not sure.
This Image is empty zone. Two rows of 50 and 51 pixel.
Thank you.
 
Last edited:

The problem is (was) in added hardware.
Short circuit in the ribbon cable to the LCD panel (glass). Between two tracks (50, 51) in the horizontal direction.
Manufacturing defect.
 

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