25 Dec
2025
25 Dec
'25
1:07 a.m.
-----Original Message-----
From: Fred Cisin via cctalk <cctalk(a)classiccmp.org>
Sent: 25 December 2025 00:02
To: General Discussion: On-Topic and Off-Topic Posts
<cctalk(a)classiccmp.org>
Cc: Fred Cisin <cisin(a)xenosoft.com>
Subject: [cctalk] Re: Hot Video Shift Register on VT100
> I just double checked and on the other unit it is a 74S299N, identical
to the
one that gets hot in the VT100. I suspect it is OK for
it to get hot and
maybe I
should just stop worrying about it. But it is puzzling
as to why this one
gets
hotter. I will get my VT101 back soon and I can see
how that compares.
Should you be worried about why the other one is running "too cool" :-?
It's an interesting point, but the VT102 works just fine so I don't think it
is a problem. When I get my VT101 back I will have a third one to compare,
it might help to decide what the norm should be. Despite the fact that they
are three different models (VT100 hot, VT102 cool, VT101 still unknown) I
think the fundamentals are pretty much the same.