Greetings!

If it makes you feel any better, I have this problem every now and then. Not often, but it does happen. I have not found a cause as yet, but it is so infrequent, I was not looking that hard for it. I had attibuted it to a frayed display board cable, but that no longer seems to be the case.
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Paul Grzelak
200GB with 48MB RAM, Illuminated Buttons and Digital Outputs