I picked up one in very good shape for 20 yrs old. I went with a friend to a reseller he wanted a sitdown Turbo. However when we got there they had Super Sprint in excellent shape. I was a big fan back in the teen years. However, I just picked up a Pole Position II sitdown a few weeks ago and I was going to make it a MAME driver. I really loved Super Sprint I knew that I could not convince my wife to add a 4th game. So, I sold the PP2 to my friend and he helped me move the Super Sprint into it's new home.
It works now with some bugs. II can see some electrical damage on the video board but it looks as if a repair was made at some time.
Now I am almost sure that either the video board is not outputting RED signals or the monitor is not displaying RED.
I really want try to isolate and fix the display problems but I don't have the Schematics. I'm looking for a source or perhaps someone who could scan and email me a set.