DK Issue, new ram didn't work

rockinganker

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Well, I posted an issue I was having with my DK boardset. The high score kit said that ram 2R was bad so I replaced both 2R and 2P with new ram and sockets. Long story short, kit still says 2R is bad and I'm still having the same issue.

Any ideas, if not, anyone have a working video board for sale?

Thanks in advance,

Terry

Here are screen shot pics.

http://picasaweb.google.com/rockinganker/BrokenDK?feat=directlink
 
Well, I posted an issue I was having with my DK boardset. The high score kit said that ram 2R was bad so I replaced both 2R and 2P with new ram and sockets. Long story short, kit still says 2R is bad and I'm still having the same issue.

Any ideas, if not, anyone have a working video board for sale?

Thanks in advance,

Terry

Here are screen shot pics.

http://picasaweb.google.com/rockinganker/BrokenDK?feat=directlink

Just because the RAM is found to be bad doesn't mean that is the problem. To keep it simple - other chips that address the RAM may be the real issue causing the self test to say it is bad because the RAM isn't resopnding.
 
This was a pain to fix. Turns out the prom set I bought from MikesArcade had a bad 2N and there were 3 other Eprom that were bad as well. Once these were changed, everything worked great. I did replace the ram on the video board as well so it might have been a combo of prom, eproms and ram.
 
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