I'm relatively new to Pinside, but I can't believe how much info is on here! I recently purchased a Williams White Water pinball. Cosmetically the game is beautiful, but a few of the GI headers were burnt after initial inspection, as well as some noticeable damage to the driver board. I decided to send the driver board off to be professionally repaired (CoinOPCauldron) and ordered replacement headers. After replacing the headers on board, the playfield GI (previously not working) came on. However, the back box GI remains dark. I pulled up the game manual, and J-121 appears to be a possible culprit. I've also read that blown fuses can prevent GI from functioning. After checking a few nearby fuses, and making sure the replacement header was properly set, the backbox GI remains dark- with the exception of two single lamps dimly lit when the game initially powers on. The game is playable, but looks funny without the backbox GI functioning. Any suggestions of where to start?
Thanks everyone for helping!