Here's a higher resolution picture of the screen for those interested:
http://ajgelado.eresmas.net/shots/pict1813.jpg
Looking at this picture, I may say that it's a RAM-related problem, because
of the repetitive pattern. Any other ideas?
Greetings,
Antonio Rodr�guez (Grijan)
<ftp://grijan.cjb.net:21000/>
Antonio Rodr�guez ha escrito:
> The picture (http://ajgelado.eresmas.net/shots/pict1814.jpg) shows a
> series of ordered horizontal scan lines of regular width, so I think
> the analogue board (with its horizontal and vertical sweep circuits)
> is working correctly. It must be a logic board problem. I'd try the
> standard procedure: to take out of the logic board all the SIMMs (both
> RAM and ROM, if it's present), cleaning its edges with a pencil
> erarser and reseating them. If you have known-good RAM SIMMs at hand,
> you could also try them.
>
> I'd also try to power on the SE/30 with both the hard drive and the
> disk drive unconnected from both the logic board and the power. If you
> get a bogn and then a flashing disk, you know that the problem is in
> one of the drives (or their controllers).
>
> If nothing solve the problem, I'd try to adjust the analogue board's
> voltage regulator. If you need further instructions on how to do this,
> I can give them to you.
>
> In the worst case, there's a (small) posibility that you have touched
> the logic board while being charged with static electricity, and that
> have "fried" one or more chips. In that case, the only possible fix
> would be to get a replacement motherboard.
>
> Good luck!
>
> Greetings,
>
> Antonio Rodr�guez (Grijan)
> <ftp://grijan.cjb.net:21000/>
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