I have the original Atari 810. The one with the problem rear board. Other than the Grass Valley upgrade, was anyone tried to do a redesign?
I might try and give it at least a look anyway. But first I would like to understand the over all issues with the rear board. From what I understand it was the RPM circuit that was unreliable. Was this pretty much the main issue?
I am thinking it might be possible to redesign the rpm control section only. Patching in control lines from the side board might be challenging.