Had the below start happening to my Whirlwind. Figured a video would be best to show exactly what is happening. As you can see, I can get some semblance of digits during the display test. Swapped out ribbon cable; no change. Re-seated all cables between display boards and the boards in the backbox; no change. Checked voltages and both are correct and strong at 100 and -100 where they should be. PIA at U41 is brand new. Could this be something relative to the display boards themselves?