Re: worst condition Tektronix scope?


Tim Phillips
 

From Tim P (UK)
From what I can see through the layer of crud, the red badge near the
calibrator knob is the logo of Livingston Laboratories.
LL were a high-end Lab instrument hire company in the UK. They would have
had a lot of Tek, HP, Marconi, EMI etc. kit for hire.
I'm going back at least 50 years, rather like that 545 !
Tim


On Thu, 26 Nov 2020 at 19:54, Dave Peterson via groups.io <davidpinsf=
yahoo.com@groups.io> wrote:

I had no idea: I thought the 475 was the one with the vertical input to
the right of the screen. I had to go and check myself - have I been calling
my scopes 465 by mistake!? No, they really do look identical - the 465 and
475. What's the difference between 465 and 475? Is the 465B and the 475A
the same too? Is the difference bandwidth? Doesn't seem that it'd be
release date as the 465B seems more advanced than the 465. I seem to recall
we preferred the "B" and thought it was the newer more advanced model.
Learning engineering minutia AND history and product lines.Dave
On Thursday, November 26, 2020, 11:16:48 AM PST, Jeff Dutky <
jeff.dutky@gmail.com> wrote:

Here is a parts scope I got from eBay
https://groups.io/g/TekScopes/album?id=257163

Most of the knobs are smashed, it's been spattered in something gray that
won't come off with soap or IPA, but when I powered it up it appears to be
in almost perfect working condition (I say "almost" because I didn't really
try to test it in any complete way, just fed the cal signal into both
channels, twiddled what knobs could be twiddled, and tried the different
button positions. Everything I tried seemed to be working perfectly).

I'd like to turn this from a parts scope into a second bench scope, but
I'll need to completely replace the front panel and knobs, unless I can
find a way to clean them up. Whatever is spattered all over it won't wash
off with either detergent and water or IPA, and I haven't tried any
stronger solvents or vigorous brushing. Any advice on how to clean the
front panel and remaining knobs, techniques or safe solvents, would be
appreciated.

-- Jeff Dutky










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