Re: TWGS upgrade problems

["NeWs" <ThEMan@Nope.Nada.NET>]

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"Tim Haynes" <timhaynes@no.spam.please.alumni.uwaterloo.ca> wrote in message
news:40ff14ed$1_2@news.cybersurf.net...
> Hey everyone,
>
> I got my mouser oscillators today, and just finished trying them out.  I
am
> using a stock ROM 01 with 1MB of RAM to test.  My TWGS has the Western
> Digial 14MHz CPU.
>
> I tried the 40, 48, and 50 MHz crystals in that order.  Continual
self-tests
> ran fine for a few minutes.  Then the self-test died with the 50MHz
crystal
> while doing the "non volatile memory test".  It just locked up - no screen
> garbage.
>
> Now when I boot, all I get is a white screen with one black block in the
> upper-left quadrant.  I went back to my 28MHz crystal, and still get the
> same thing when I boot.  Even waiting a while doesn't fix the problem.
> Tried moving the TWGS between slot 3 and slot 4, wiggling the oscillator,
> pressing down on all socketed chips & the ribbon cable sockets - still no
> good.
>
> When I remove the 32k cache board, I get a pure white screen (no black
> block) but the black block comes back when I put the cache card back on.
>
> Is it possible that I've destroyed my TWGS?  I'll I leave it for a few
> hours/overnight but am not holding much hope.
>
> Thanks
> Tim
>
>