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  • Hi, I'm really hoping someone can help me out here. I have a Blast city PSU (Big black box with PSU and audio boards inside). It's had a burn up and ZD1 is short circuit but I cant see the markings even with a magnifier. Is anybody able to tell me the value? Thanks in advance.

  • Been repairing a few of these lately. One fault I had was EHT was too high causing it to go into shutdown. U701 regulates the EHT by monitoring pin 11 of the flyback. D705 was faulty stopping anything getting back to U701 so it kept pushing the EHT up until shut down.

  • Hi, I have a Sega AstroBlaster Monitor and reall y need a schematic for it. If anyone can point me in the right direction I will be eternally grateful. Model is S-96671-P Thanks in advance.

  • Hi from the UK

    ArcadeClubTech - - Introduce Yourself!

    Post

    Hi, I'm a technician at Arcade Club in Bury, UK. Ive been looking for a place to get transformers for MS2931 chassis and one of the threads here gave me some good information.

  • Hi, I ordered one of these flybacks recently. The High voltage was down at 18Kv. I turned it up but only managed to make it 22Kv. The heater voltage was low so I swapped the 3.3 ohm resistor to a 1 ohm and the picture was acceptible. Gunblade, regarding the company who will remake it...Can we be any assistance financially or otherwise? Maybe a bunch of us could help to stump up the inital outlay?