Greetings Adafruit Support,
I received my RGB LCD Shield Kit w/ 16x2 Character Display kit today (https://www.adafruit.com/products/714
) and assembled it without any difficulty.
My intent is to mount it in a plastic enclosue and use it in a detached configuration so I left all of the headers off except for the on that interfaces the LCD panel to the interface board. I also elected to mount the contrast pot on the back side of the interface board to facilitate a better fit to the cut out in my enclosure.
I applied power and immediately noticed that there was no backlight. I adjusted the contrast pot as instructed. At one extream The display is a solid black field. At the other extream each cell in the upper row of the display is a clear rectangle.
I have tried alternate power leads with no change in symptom. I checked the supply voltages with an osciliscope and it reads 5v.
How do I get this fixed?