Hey guys, I may have been stupid here. There is a transistor on this stern I am working on and it was blown so I replaced it. I thought It was for the scoop so I replaced that coil because I thought it tested out bad (at 003 and the beeper going on the dmm with the diode cut). Put it all back together and it played good, for a few minutes, then the fuse blew. I tested the transistor again and it was bad again. I figured hey I must have messed up the install so I cut it out and replaced it. and the game played again right until the ball hit one of the pop bumpers the the fuse instantly blew and the transistor went again.
So can a bad coil blow a transistor? Once I realized it had nothing ot do with the scoop I noticed the paper on that coil looks burnt. Cut the diode and it tested at 003 with the beeper sounding on the DMM. I thought that meant bad but I cut the diode on another know good coil and it tested at 004. Am I doing this wrong? I thought a good coil would test out much higher.
So can a bad coil blow a transistor? Once I realized it had nothing ot do with the scoop I noticed the paper on that coil looks burnt. Cut the diode and it tested at 003 with the beeper sounding on the DMM. I thought that meant bad but I cut the diode on another know good coil and it tested at 004. Am I doing this wrong? I thought a good coil would test out much higher.