I've got three bootleg arkanoid boardsets. One is incomplete, ill skip that one.
The first boots nicely, all graphics are there, EXCEPT the paddle, the ball and the random floating aliens that drop in from above. Those are all missing. The game works though, but invisible arkanoid is not really my favourite... And it's a bit difficult to finish.
I havent started poking around this one yet.
The second boots as well, but the screen has bars from left to right (actually, if you put the monitor in the horizontal mode, its from top to bottom offcourse). Its a bar good picture, a bar random garbage sprites, a bar picture, etc. About eight bars good and eight garbage, i reckon.
Things i've tried with the second board: Removing and reseating eproms. Replacing some roms. I tried shorting some adress bits in the vid ram(got garbage on the GOOD part of the screen, but no change in the bad part).
If anyone has any experience with arkanoid problems, or recognizes this problem from another game, i'd be very happy...