Quoted from zaza:Here with the RD-board it feeds the flippercoil between +12V and +72V through R210.
This has been driving me nuts, I assumed this was the case.
On a pre-fliptronics WPC, I was getting 12 volt feedback through my coils without the 50 volt source plugged in... I've been staring at the main manual for the longest time before I looked at the rotten dog one. It's nice to have confirmation from a second source... just seemed really odd to me. Think I've spent enough time on this goose chase.
thanks for posting.