Re: Star Wars Vector RAM

Hi Steve, Andre
A/R totally rebuilt about a year ago as I was getting game up and running, new Big Blue. Just check voltage at the Vector RAM chips 5.11 volts. I also swapped around all remaining chips as Andre suggested, nothing has changed still indicates 4p bad.
Rich
  ----- Original Message -----
  From: Steven Winslow
  To: vectorlist@vectorlist.org
  Sent: Sunday, May 22, 2011 5:16 PM
  Subject: Re: VECTOR: Star Wars Vector RAM

  Sounds to me like you may have bad/low 5v powering those ram chips. Have you confirmed the power supply or swapped in another A/R board. What voltage is read at the chips?

  Also, have you checked the edge connectors for corrosion or burnt/overheated connections? Have you replaced the big blue cap (27k uF) on the power block?

  Steve

  On May 22, 2011, at 1:50 PM, "Rich Harkoff" <rharkoff1@new.rr.com> wrote:

    Hello,
    My Star Wars quit working a few days ago, no video. To try and track down the problem I ran the self test and I heard a low tone on the 6th indicating a bad RAM at 4p, after swapping with another working RAM, ran test again same problem showed up bad RAM at 4p. I swapped 3 chips in all and each time #6 beep/boop would indicate 4p being bad. So figuring problem was elsewhere I got the trusty meter out and ran continuity from each pin of 4p to all the other 5 RAMS, all tested fine, pin 18 of 4p RAM goes to 2K pin 6 and that checked ok too, even changed the socket to make sure it wasn't flakey. Anyone have any thoughts on what is going on with the board?
    Thanks for your time,
    Rich
    Green Bay

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Received on Sun May 22 19:29:15 2011