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Museum of the Game® & International Arcade Museum® Forums
Hey guys. I have horizontal collapse on a k7400 chassis. The only component I have found faulty was an open r104. I replaced it and I still have horizontal collapse. I also gave a it a full capkit and that didn't help either. My b+ is perfect at 117. The flyback does not energize the tube either. I replaced it with a know working flyback as well. The power circuit passes the lightbulb test. I can also connect the lightbulb to the horizontal yoke header that connects to the middle leg of the h.o.t and I also get 117-120 volts and a lit lightbulb. Q101 tests good, Hot tests good ( I replaced it with an FJL hot as well), switching mode power supply chip test good, and q703 tests good. I have not seen this problem before. My test tube is also good and the yoke is not damaged. Thanks for any assistance.