I've only had one fuse go (F5) and that's when I hooked up my shaker last week (played for about 20 minutes with the shaker installed and then the fuse blew). Was just playing a game and next thing you know the flippers stopped working and the shaker just kept on spinning. I had posted about it and Markmon mentioned I should see if it happens again before I can pinpoint it as having something to do with the shaker, which definitely makes sense. I only had 1 spare 7A fuse so I've put that one in and unhooked the shaker for now. Will be getting some new fuses in a few days and then I'll hook the shaker back up and see if it happens again.
At this point everything is good with the game since I replaced the fuse and unhooked the shaker, no problems. Hope it stays that way once I hook the shaker up again.