Damaged HUCard?

[smilingbob]

I recently got an unboxed copy of Darius Plus via Ebay. On starting the game, however, the graphics are corrupted- it starts off as just the backgrounds, then the bosses, and then after a few levels, the graphics are completely garbled. Luckily, the guy who sold it me has a returns policy. I'm guessing the fault's with the card, as with my other games (Populous, After Burner, Dungeon Explorer), there are absolutely no problems.. Is there anything I could do for this HUCard, or is it finished?

PS. I'm simply using a Core Grafx II, with the relevant power supply for the UK (220V). I do remember playing a ROM of Gunhed on an emulator with the same graphical problems.

[myoldskool]

I seem to have a faulty game of Son Son II and Valkyrie no Densetsu, they either freeze, have invisible sprites or no sprite collision!!!