Hi! I purchased a Bond Gottlieb system 80 not working. The boards in the game looked in bad shape. So I replaced the power supply board and the driver board and the mpu with new rottendog boards. I then powerd the game up. All the lights came on. The game would not take any credits. I looked at the coin door and noticed the credit switchs were bent up and the slam tilt switch wires were cut. I adjusted the credit switchs and connected the slam switch on the door. I also checked the tilt switch under the playfield to make sure it was open and the roll ball switch was open. Then I gave a few credits and started a game. The ball then kicked out of the out hole. At this point the jets and the side bumpers and the flippers will not activate. I then checked the pop up bumpers and the score switchs on the playfield and they all worked. I also checked the diodes under the playfield and on the bottom of the cabnet and they were all fine accept one underneath the playfield. I did notice on the old mpu board that they had defeated the slam tilt. Yesterday I went back and looked at the game and I tied the two wires together on the slam tilt. Then I went to give the game credits and start a game and the game would not give credits. I then turned game off and turned back on and the game playfield lights went off and the display was lit. I hooked the wires back directly to the slam switch again and the playfield lights come on but wont let me give it credits. Any suggestions would be appreciated. Thanks

Thanks for the repair advice