Turbo Outrun Video artifacts

My turbo outrun turns on and plays, The memory test and rom test check out fine.

However the video sprites are random. the car will some times not be there. or it puts random buildings and signs in the middle of the road.

I just got this game from a warehouse so am not sure of it's history. It has the suicide battery that looks like someone has done the Replacement on. it it works.

I've tried removing all the socket chips and resetting. Same issue.

I've included an image.

Any ideas?

Thanks in advance....

Attached Images

	IMAG0166.jpg (97.0 KB)
	IMAG0165.jpg (95.2 KB)