I recently couldn't get 43volts to MPU. I installed new rectifier board and new MPU as the old had damage. Game boots but I only get 5 chimes on boot. Also if I add a credit and hit start it won't kick ball out. Left flipper works but not both right flippers. The drop targets dont reset. And it seems it constantly is adding points. Should I revisit connectors? I'm very new to pinball repair.