I've been fighting this Out Run board failure on and off for quite a while and thought I'd take another look at it. It's been a while and I don't even know if I've ever asked for any advice. Anyway, the board is playable with sound but has a few graphical glitches. One problem is the sky is always the same shade of gray as the road. On level one the sand is also that same color and I have no houses on the side of the road either. The other thing I've noticed is the enter initial screen is missing most of its background graphics and instead is almost all black. Hopefully these are all related to one failure. So far I've tried swapping the socketed chips in the sub processor section, but maybe I'm looking at the wrong area. Here's a few pics to show you what I mean. Any advice on what I might want to check next (I'm guessing some of the 7400 chips nearby the sub processor roms)? If anyone repairs these boards I have 2 other non-working sets (one dead, one with no sound and graphics issues) that I'd be willing to trade towards a repair. If it comes down to it I'd just pay a repair fee if the person isn't interested in the other boards. Thanks all.

