Quoted from Mbecker:Didn’t you originally have a fuse that was blowing? How did you narrow it down to the bridge in the first place as the source of the issue??
When I bought this machine, which is a JackBot, I knew that it would need some work. I'm familiar with EM games and I was ready to try something new, so I went looking for a machine. I managed to buy it for a bargain, and I noticed some work straight away. Nothing I haven't done before, such as changing bulbs, rubber, etc. The playfield was extremely dirty, but I managed to get it back to it's former glory. After changing the bulbs, I noticed that the flashers and a strand of lights in the backbox didn't work. I noticed that a certain fuse keeps blowing, which is F108 on the machine, and I haven't been able to locate the culprit. Now this problem? It all happened when I change the rubber on the machine. One day it worked fine, then the next day the lights under the playfield didn't come on. Then the common "check fuses F114 an F115" error message popped up in the display. I've been following a PinWiki article and started with checking the fuses. They weren't blown. I then read that the bridge rectifiers on these Williams/Bally machines of this era are prone to this problem, and that it will throw this error message. I then decided to test both rectifiers, and soon found out that BR2 had a voltage that kept going up. I also watched a similar video where a person had the same problem on a Williams Dracula. His was doing the same thing with the bridge rectifier, where the voltage will keep going up. I ordered a new rectifier to replace BR2, and then took out the old one and put the new one in. It was a different brand and looks nothing like the old one, but fits in the same way and does the same thing. After checking the rectifier after putting it in, it fixed the voltage. I went down to bridge rectifier BR1, checked it with a multimeter, and found out that it now doesn't work. It showed correct readings before I put the new rectifier for BR2 in. I took a break, came back, and it showed the correct voltage! Double checked it over and over and it worked. I put the board back in the game, connected all of the connectors (and made sure that they went into the right spot), turned the game on, and nothing turned on. I don't know where to go from here or what to check now.