Vertical black lines and characters move jittery.
1E pin 3,4,5 databus DR0 thru DR2 grounded or high
Big black lines thru maze and characters
2B pin 2 short to pin 7
Sandy pink maze and dots no characters
3B pin 1 short to pin 4
Only Score and credits show no maze
2B pin 1 short to pin 7
2A ,2B pin 15 is low
2A pin 1 short to pin 7
3A pin 4 is low.