Working on fixing a whirlwind. The battery had some acid damage which I attempted to clean up. Installed a reset generator per pinwiki, replaced all sockets, burned new roms. Recapped power supply. It worked fine on the bench for all my testing, but when I put it in the machine, usually it boots fine, but sometimes it just sits there blinking the diagnostic led with the blanking off. The blinking isn't the very quick blinking of a properly booting game, it's slower. I assumed at first it was giving me an error code, but it just kept going past 11 blinks. Is this any known issue?