Thanks, I sort of get it though, its just I'm wondering if its still not highly desirable, why the price is still relatively high say compared to old Tek 465.
Looking through sold oscilloscopes the 465 and TAS 465 fetch pretty similar prices - the average for the TAS465 does look a bit higher but there is a considerable overlap.
The problem with the later 'scope is that it's old enough (mid 1990's design) to be completely out of support by Tek but the "service manual" doesn't have component level schematics. It's also SMD with components that are difficult for many hobbyists to solder, and with quite a few tek-specific custom chips (now unobtainable). Finally I suspect that nowhere near as many were produced as 465's so trhe availability of units to act as a source of parts is lower.
The 465 'scope has easily obtainable schematics and apart from a few problem components such as tunnel diodes is built from mostly available stuff.
Consequently if you buy a TAS465 and it dies that's probably game over whereas you'll have a decent chance of repairing a 465.
On the up side the TAS465 is a more modern 'scope with more features than the 465 - especially on-screen display and cursor based measurements, hence the slightly higer price overall.
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