Hello,
My Taxi is blowing the F4 fuse on the driver board. I recently replaced the Driver board, MPU, and Power Supply with Rottendog and Pinballpcb.com boards.
I was able to play quite a few games before F4 blew and now it blows when I turn the game on. F4 goes to J11 on the Driver board so if I leave that unplugged it doesn't blow.
I have checked all of the coils and switches and none of them are stuck or binding.
Please let me know what I need to do to fix this, I am completely lost at this point since I know it's not a board issue.
Thanks,
Jeremy