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STM32F4 Discovery board problem

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I've got an issue with a stm32f4 discovery board. It was working fine until I want to upgrade to pin2dmd 2.36 version.

The display's pixels began to change color and after few second all the bottom part of the displays become blue.

I try to change the displays, the shield but the issue is really on the stm32.

I try to upgrade the firmware of stm32, come back to pin2dmd 2.33 version to but nothing is working.

Doe's anyone got an idea ?

20170107_161832.jpg

20170107_161841.mp4

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I had a similar issue a coule of weeks ago where i was getting random "stuck" pixels that were illuminating in red. My initial though was that it was the panels, but I swapped them for another pair and it did the same thing. I then swapped the shield board - still the same thing. I then swapped to a different Discovery board and the problem was gone.

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