I don't have many issues pop up with my games til yesterday. Started to notice a burning smell in the gameroom. (all the games were on) Started sniffing around and found that it was coming from Monster Bash. Uh Oh... pressed off a game, game started but no ball ejects from the trough. Shit... open the coin door and try to slap the eject plunger to see if it would throw out a ball manually. Plunger sticks half way through it's stroke. OK sniff the open coin door and yep this is definitely it. Removed the coil from the trough. Yep definite melt down. Damn thing must have locked on for awhile. Install a new coil (I happen to have one in my coil box). Start a new game... no ball eject... shit... Ok at this point I need the manual to check the solenoid table to find out what Transistor fires the Trough Coil. OK... here it is... Q44 (TIP 102) "famous for failing especially in short state" Remove power driver board... Yep Q44 is a crispy critter. Soldier in a TIP120 (much better transistor) Reinstall power driver board. (carefully making sure all plugs are installed correctly) fire up the game in test mode. Trough Coil fires properly! YAY! Play a couple of games, all is good! This is a typical failure that doesn't happen all that often. But with the right tools and a little experience you can make this repair just the same. The first time you can post it up on here and we will walk you through it. So go buy some pins!