Re: WG 19V2000: Looking for circuits

Any chance you may have installed the diode backwards? It happens. The last time I had a bloomin' monitor, there was a transistor mounted without an insulator on the mounting screw and that was grounding the tab of the transistor. That created a short circuit that blew a 3ohm 5W cement resistor (in about 3 seconds after first powerup) that was feeding positive power. Without the positive side of the power supply, the HV was low and the lines blurry and shaky and the picture was way too big.

William Boucher

  ----- Original Message -----
  From: Kevin Jonas
  To: vectorlist@vectorlist.org
  Sent: Thursday, July 24, 2008 10:05 PM
  Subject: RE: VECTOR: WG 19V2000: Looking for circuits

  I believe so. I don't have a scope. One of the problems was the monitor was blooming, the game played fine. it's beena while but hte last thing I did was something with the HV circuit. I screwed up something with the diode.

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  From: colin.w.davies@btopenworld.com
  To: vectorlist@vectorlist.org
  Subject: Re: VECTOR: WG 19V2000: Looking for circuits
  Date: Thu, 24 Jul 2008 22:10:53 +0100

  Presumably you checked the xy outputs from the game pcb on a scope in xy mode ?

  It all helps to diagnose a dodgy monitor...

  Regards, Col
    ----- Original Message -----
    From: Kevin Jonas
    To: vectorlist@vectorlist.org
    Sent: Thursday, July 24, 2008 7:56 PM
    Subject: VECTOR: WG 19V2000: Looking for circuits

    I tried this mailing list a couple years ago. I picked up an Asteroids but the monitor was bad. I was asking for help here. We progressed along well figuring out what the problems were. However, one problem kept stacking up on another. The first solution was to replace the rectifier because it was blown. This presented a new problem. This pattern occurred until the problem was in the HV circuits. I think I screwed something up. That's when I had to stop the project.

    I am ready to get back to it. However, I was wondering if anyone has working circuits. I'm getting uncomfortable working with the HV circuit. I'd rather replace the circuits if I can.

    Thanks,
    SirPoonga

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Received on Thu Jul 24 23:21:29 2008