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Test Equipment Anonymous (TEA) group therapy thread

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Specmaster:
That sucks the life out of the second hand market then :--

med6753:
Some vintage pron. Tek 465 Vertical Board. It has to come out to diagnose and fix issues with the Channel 2 attenuator deck switch. According to bd139 it's not too bad to pull. In comparison to what? A root canal? Not sure what I'm facing but I'm going in. Not sure when or if I'll return. And of course this delicate surgery demands a good assortment of high quality tools. So full (careful) speed ahead.

tggzzz:

--- Quote from: Mr. Scram on June 02, 2018, 08:26:24 am ---
--- Quote from: tggzzz on June 02, 2018, 08:22:40 am ---The "cost of your time" depends on the individual. Some are cash-rich time-poor, some are time-rich cash-poor.

The cost can also be negative, e.g. if repairing something allows you to learn something that is later valued by, say, a potential employer.

While I advise beginners against trying to repair scopes, I get irritated by people that claim that only DSOs should be considered and/or that DSOs are better in all respects. Neither is true.

--- End quote ---
In what regard are CROs better and why aren't companies capitalizing on that?

--- End quote ---

1) for relative advantages and disadvantages, see elsewhere - ad nauseam

2) cost of new equipment, plus the rapid advancement of fast ADCs over the last decade has made them practical, plus the problems of using CRTs with multi-GHz signals.

None of that affects the statement I made in any way.

bd139:

--- Quote from: Specmaster on June 02, 2018, 11:15:58 am ---That sucks the life out of the second hand market then :--

--- End quote ---

Second hand market is getting a bit weird anyway at the moment I've noticed. Prior to manf about 1990 there's plenty of kit. Between about 1990-2010 there's bugger all and then everything after that is way too expensive. I think a lot of people are renting then it gets disposed of. Our TF930s were a rare disposal leak.


--- Quote from: med6753 on June 02, 2018, 11:20:39 am ---Some vintage pron. Tek 465 Vertical Board. It has to come out to diagnose and fix issues with the Channel 2 attenuator deck switch. According to bd139 it's not too bad to pull. In comparison to what? A root canal? Not sure what I'm facing but I'm going in. Not sure when or if I'll return. And of course this delicate surgery demands a good assortment of high quality tools. So full (careful) speed ahead.

--- End quote ---

That's an early rev one. Same as mine. Most of the coax connectors just pull out, pot shafts disconnect etc. Only desoldering is the front end cap and possibly the delay line.

Compared to the D83 power supply transplant that's easy money ;)

tggzzz:

--- Quote from: Specmaster on June 02, 2018, 09:37:36 am ---I just wonder if the DSOs of today will still be around on say 20 let alone 40 like so many of the CROs are?

--- End quote ---

The DSOs of 20/30 years ago should be jettisoned ASAP (except for sentimental reasons). They were grim compared with their contemporary CROs, but rapidly replaced  ASOs, which were even grimmer!

It is only in the past decade that ADCs (and DACs) have improved rapidly.

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