sprites

Upon pulling out my Aero Fighters board and firing it up, I was greeted with two errors on the automatic memory check: SPRITE PRI: NG SPRITE ATA: NG When the game started attract mode, I quickly noticed no sprites were displaying and only background tiles showed up. I tried pressing on...

I'm getting corrupt graphics from a Raiden II PCB. The sprites are bad and there is a blue grid overlay. Any suggestions on how I can fix this? So far I've: Cleaned and reseated the socketed chips Cleaned the PCB Recapped it Checked for bad traces Test Mode screen is completely corrupt:

I picked up a broken Strikers 1945 PCB and set to work troubleshooting and restoring it. It wouldn't boot because of a missing cap. I cleaned the board, added the cap back, and fully recapped it (long-life 105C rated caps), which got it running minus foreground sprites. It came right back to...