Re: Omega Race repair

Re: VECTOR: Omega Race repairI thought that trash board looked ok, I post a picture of one I'm working on later, pretty much every chip along the bottom edge has been removed. I used vinegar and baking soda to clean the battery damaged areas and then started the long task of removing all the pins. Its probably not worth fixing but that makes me want to fix it.
  ----- Original Message -----
  From: John Robertson
  To: vectorlist@vectorlist.org
  Sent: Tuesday, October 17, 2006 7:13 AM
  Subject: Re: VECTOR: Omega Race repair

  A few years ago a friend and I designed a simple Z80 CPU/RAM/ROM board with a GAL (to program the RAM/ROM/CMOS memory map) to possibly replace the corroded areas of games - originally for the Game Plan MPU. Never did get very far with it, as both time and need never pushed us to continue past the prototype PCB. This plugs into the Z80 socket on the motherboard of the defective game, and one cuts out/disables the damaged areas to avoid interference. Has it's own reset IC as well (if wanted).

  Still - if anyone wants to continue the research I am happy to send out one PCB for an expert to play with. I suspect it might work for the Omega Race. All you need is a programmer that handles GALs and Eproms to play with it. The RAM was designed to go up to a 4164 and the ROM to 27256 as I recall. The CMOS is a (Dallas) 2K X8 equiv.

  John :-#)#

  At 1:52 AM -0400 10/17/06, MKDUD@aol.com wrote:
    In a message dated 10/13/2006 4:31:18 PM Eastern Standard Time, blk-1@beercade.com writes:

      Sorry about that last post of mine..

      Any interested in this crazy offer?

      Fix my Omega Race caberet and you can have a complete Omega Race caberet. I have
      3 of them.

    You're saying "lots of battery acid damage", and I'm sure somebody might want to help you with your offer, and I hope they are able to repair your machine (s). However, you might want to provide pics to see if a restoration of the boardset is even possible, or, economically feasable.

    I just fixed 2 Omega race machines. The first boardset was not too bad, usual ram and dac / op-amp issues, very slight corrosion near the reset section and clock. Harness was fine.

    The second was a nightmare. Corrosion had gone into the harness, wrecking the edge connector @ J7 on the main pcb, as well as the edge connector to the daughterboard. Corrosion was into the wires from J7 almost a foot down, also was getting all the way to connector J1 on the daughterboard. If I had to do this again, I would have told the owner to replace the harness, and get another main board that was in better condition.

    I'm wondering if anyone has attempted restoration of some of the really acid-trashed Omega Race boards, goodness knows there are enough of them out there... If you're interested, here are "before" pics of the really trashed main board - took alot of hours to reapir it, not something I'd want to try again for a while...

    http://members.aol.com:/mkdud/trashedor/acidboard1

    http://members.aol.com:/mkdud/trashedor/acidboard2

    http://members.aol.com:/mkdud/trashedor/acidboard3

    http://members.aol.com:/mkdud/trashedor/acidboard4

-- 
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  Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
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