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 18:14:34 2011
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