IIE SELF-TEST: Which ram is bad? error code

[buggie@ben08.unm.edu (stephen e buggie)]

I've been give three junked IIe motherboards.  (Mrs. Buggie does not yet
know it ...

Like a vet fixing an injured animal, I am fixing these IIe motherboards.

One merely had the 65c02 inserted incorrectly.  The second came back to
life merely by getting the enhancement chip set installed.

The third is now enhanced, and this RAM error message appears on the
self-test screen:


                 R A M      0 0 0 0 0 0 0 1

This message clearly states that one of the motherboard eight RAM chips is
bad, and that it is either the first or last of the eight.   But _which
one_?

If the RAM were socketed, I would simply replace them one chip at a time.
But these RAM chips are _soldered_, so I want to know on the first try!

The left-most RAM chip is labeled on the front edge of the m-board as #6,
and the right-most RAM is #13.

Please advise!		Steve Buggie



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 ** Stephen Buggie  UNM-Gallup,  200 College Road,      Gallup NM 87301 **
 ** buggie@unm.edu      IIgs/IIc/IIe  voice: (505) 863-2390 or 863-7504 **
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