I looking for a little help. I'm trying to install SBM 2021 mega. I'm using the RoyGBev Rev 3 board. The Arduino program says the sketch has uploaded and the Tx & Rx lights were flashing during upload, but after install all I get is GI & rapid flashing of the controlled lighting, nothing on the displays.

I just can't figure out what I am doing wrong here. Can someone point me in the right direction?

Thanks.

I removed the rev 3 board and hooked the arduino up to my computer. The problem seems to be a bad/bricked arduino. When I upload the blink example, it uploads but the light doesn't blink. When I originally powered it up, the light was blinking. I have another arduino and the blink program works properly.

To answer your questions:

After the board didn't work, I removed it and cleaned the pins on J5 - no help.
Yes it is a -35 board.
Yes the IRQ is connected to R134.
Since the arduino board is currently removed (and the cpu board is so flimsy I removed it first to remove the rev 3 board), I haven't checked about reverting to the original CPU.

Is there any way to clear the programming from the arduino?