[sebhc] H89 Power-up problems.

Mark Garlanger garlanger at gmail.com
Sat Jul 8 21:22:44 CDT 2006

Hi Jim,

  Thanks for the offer. I'd like to try that if Lee still thinks that
it could be the issue. Although, if the third H89 I'm hoping to get,
comes soon, I'll probably see if someone with more time and the right
tools wants this one [likely minus the drive] to work on.


On 7/8/06, Jim Battle <frustum at pacbell.net> wrote:
> > -----Original Message-----
> > From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of
> > Mark Garlanger
> > Sent: Saturday, July 08, 2006 4:11 PM
> > To: sebhc at sebhc.org
> > Subject: RE: [sebhc] H89 Power-up problems.
> >
> > It appears that the problem is the keyboard encoder chip. After a couple of
> > key presses today the screen went crazy... multiple 'H:'s on the screen,
> > then garbage, shift-reset not working then shift-reset working... Nothing
> > consistent.
> > Any idea of a work-around since I'm guessing that the encoder chip is
> > no-longer available? Or should this just be my spare parts machine? I did
> > acquire a loose terminal board, but looking at the condition of it (not sure
> > of it's history), there is no chance that the chip is still functional.
> >
> > Mark
> I have a dead h89 carcass -- if you want me to pull the chip and mail it
> to you, let me know.  For that matter, if anybody needs a CRT and wants
> to attempt a transplant, let me know.  Or miscellaneous parts, like
> keytops.  It doesn't have any floppies and the logic boards appear dead,
> although I haven't attempted to figure out if they are all dead, or
> there is a single point of failure, or something between.  I have a
> vague recollection that when I got it I was told that the machine smoked
> at one point.
> --
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