I'm just curious how many people have powered up their TRS-80 computers,
and ended up with a bang and a room filled with smoke?
So far, I've gotten the fireworks in two out of two TRS-80s (model 3 and
4) when they were powered up. In both cases, the problem was with the
main line filter capacitor mounted on one of the power supplies. The
computers continued to work which was my first clue the problem was not
serious :).
Is this a normal problem with these older computers? I'm used to seeing
the electrolytics give problems, but this is the first time I've seen
one of the X type line filter caps blow.
OK...?? it isn't Versatec or Calcomp but it is early HP.?? It's a
DesignJet 755CM.?? HP part number is C3198B.?? It was fully functional and
in weekly used when finally taken out of service but it's been sitting
for 20+ years in inside storage and it needs a new home. I haven't fired
it up as it *will* need new belts (just from sitting) but otherwise it
should be in fairly good mechanical/electronic condition. Lots of tech
data including the complete service manual can be found online.
It needs a new home.
Any interest? Physically/cosmetically it's in good shape although the
paper bin is not original.?? Its mounted on the classic DesignJet stand
for mobility and I have a box of assorted unused/sealed ink cartridges
(beyond that, their status is totally unk though).?? I can probably find
a roll of paper for it as well.
Located in the SF Bay area, it *could* be shipped but I suspect you
don't want go there - even if I boxed it myself.?? If there's a serious
interest, I'd be open to delivering it or meeting part way.?? Obviously,
I can part it out or just e-waste it but those seem like such a shame to do.
I could email some photos off-list if there's anyone interested.
Steve
With SMD disks even harder to come by than MFM disks, has there been any plug-in replacements developed for them? I've seen MFM disk emulators, haven't seen SMD ones though, anyone know if they exist?
> From: Zane Healy
> What I found really odd was that it had part numbers and manual names
> from one version, but when I clicked on the links it said no known
> version online.
They try and list all known DEC manuals and print sets that ever existed, so
just because something is listed in the index page (and has a subsidiary page
which is linked from there), doesn't mean there's a known copy online.
If you look in the "Status" column on the index page, it will be blank if no
online copy is known, or "Online" if there is a copy (to which they link,
through the subsidiary page).
I have mixed reactions to it. I use it some, often to see if something is
online at all. (If I buy a manual, I usually check, to see if I need to
scan it, and get it to Al. Have a backlog at the moment, sigh.)
The problem is that there are 'false negatives'; i.e. entries where
they say 'none known online', but which are available. E.g.
KE11-A Field Maintenance Print Set
http://manx-docs.org/details.php/1,9358
KE11-B Field Maintenance Print Set
http://manx-docs.org/details.php/1,9361
Both listed as not online, but they are: the KE11-A is on Bitsavers,
and the KE11-B I also just found (IIRC, on one of the collections they
list as indexed).
So I'd use it as a 'first stop', but don't depend on the negatives to
be accurate - do a Web seach if it pans out.
Noel
I am looking for 3 VME slot covers for a Sun 3/260. I presume ones from any Sun 3 VME cabinet will work.
For shipping purposes, I am in the Seattle area.
alan
While getting ready to order some Kemet caps from Digi-key (same P/N
posted earlier), I noticed they all had "RIFA" on them. Is this a big
OOPS to order them, or would they be okay?
I tend to prefer fixing something once :).
Marvin
I picked up a couple of HP 5036A logic trainers today, both of which have
had goopy decaying foam come into contact on their PCBs. What's effective
at removing it? I've only ever had problems with it in locations where I
can use things such as citrus-based cleaners, but I'm a bit wary of using
those around a PCB. Is regular Dawn/water likely to work?
thanks!
Jules
