10/11/2023 0 Comments Cpu transistor q29 data east![]() That burning was caused by a locked on knocker coil. It certainly didn't cause that MPU board burning. True, your original power supply could certainly not be working properly but it is probably because it is missing a voltage. If the board burned through a trace, it may need to be stitched so that those transistors all work to fire coils properly throughout the MPU board. ![]() No issue if you don't mind that there isn't a knocker coil present. I've brought two TA's back to life but they were challenging to get working properly. TA is a very hard to find pin these days, as they only made 1000 of them. Data East pins can be finicky, but they also can be ironed out and enjoyed. As a reminder, I still have the playfield hanging on my wall, as I parted out the machine, and I rob it for goods from time to time. I learned a lot from that experience, it was a terrible nightmare. My second machine was a Data East Torpedo Alley. For the time being, if it's covering the hole, just leave that be for now until the other issues get ironed out. When you say ''none of the coils are firing'' does this include the pop bumpers, and other kickouts, such as the eject saucer at the top of the playfield? or just the trough? Keep in mind that if your switches were not working at the trough, it would not let you start a game (would say ball/s mising on the displays) so I'm curious to know if it's dead switches or just crappy/flakey switches? And to offer a serious low ball when buying a pin if it isn't working. I have learned to never listen to a seller when buying a dead pin. And get a new fwd/rev switch installed in the diagnostics buttons. Need a repair/rebuild kit for the top right flipper. I also found that the pop up ball saver has broken free from the coil. I get the nice Adjusts Reset every time I fire it up. I ran out of time but I will go back and check the fuses again tomorrow. As well as the ball not getting kicked out into the shooter so you can start playing. That is causing the balls to just sit in the trough and not get kicked forward. I have a few dead switches but the main issue is the coils. WTF? But the fwd/rev switch is broken so I can only do diagnostics. And lo and behold the diagnostics are now in English. OK - I replaced the displays with the ones from my Playboy.
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