"If not for FleaBay, then where else can one obtain these old scope
modules?"
They show up pretty regularly at the surplus stores around here. I just
bought two TM500 (DM502 and FG502) plugins for $5 at a store near here and
they still have three plugins for the Tek 7000 scopes there (don't recall
what they were now.) Also on Craigslist. Also lots of the guys that
collect vintage computers or other types of electronics come across them
regularly and most have some laying around that they got with other
equipment. Also hamfests. You just have to get out and beat the bushes,
or pay the inflated E-Greed prices.
I watch Fleabay pretty closely for anything of interest that's nearby
and that I can go and pick up in person and save the shipping costs and
damage.
Put a want ad on Craigslist. It's free.
toggle quoted message
Show quoted text
On Wed, Nov 25, 2020 at 2:38 PM David Kuhn <Daveyk021@...> wrote:
If not for FleaBay, then where else can one obtain these old scope modules?
On Wed, Nov 25, 2020 at 1:19 PM - <rrrr6789@...> wrote:
My rule of thumb when looking at electronic equipment on E-bay or
anywhere else is to look *closely* for signs that anyone has been into
it.
If it isn't *sealed* and it's not guaranteed to work then expect the
worst. I wouldn't pay more than a *minimal* price for anything that has
been opened and that isn't guaranteed to operate properly. I've seen far
too much equipment for sale by big time used equipment dealers such as
Tucker Electronics being sold in "as-is" condition that I'm sure have
already been stripped of anything useful.
On Wed, Nov 25, 2020 at 10:08 AM David Holland <
david.w.holland@...>
wrote:
Yeah, as Brenda said....
The manuals detail what vacuum tubes are in the plugins. I'd pay
close
attention to any photos as I've gotten burnt once or twice by not
paying
attention to them. I would presume if there's no photos, and no
statement
one way or the other, that the tubes are missing.
If you start getting into the advanced (sampling) plugins, I would pay
closer attention to the photos for the presence of the transistors, as
most
of them are socketed, long obsolete, and made from 99.95% pure
unobtanium.
A few plugins (ex: 3B3) use tunnel diodes, but as far as I've seen,
they're
generally soldered to the board. Tunnel diodes are also mostly made
of
unobtanium, and may be dead, but at least they'll likely still be
there...
:-)
Again, the various plugin manuals all have a relatively complete parts
list
in the back, if you wonder what should be in a given plugin.
David
On Tue, Nov 24, 2020 at 12:05 PM Brenda via groups.io <brendda75=
[email protected]> wrote:
Hello Dave, The 3A1 plugins that I have come across ends up not only
the
6DJ8 tubes missing, there are 2 8233 tubes that end up missing as
well.
There are 4 7586 nuvistor tubes in the front end, but seems like the
tube
pickers pass over these from my experience. I am in the market for a
few
3A1 and 3A6 plugins myself...at a reasonable price, $400 is just way
too
much!!
