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This forum post over at the EEVBlog Forum gives us a great look at the inside of an old Tektronix 465 Oscilloscope and walks through the repair and refurbishment of the scope. The refurbishment isn’t just taking a cotton swab and rubbing out some dirt, it is rather invasive including a complete system dismantle and cleaning. Nice thing about this method is we get to see all of the internal workings of the device! Thanks to ModemHead for taking the time for documenting this.
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February 16th, 2013
Glad you enjoyed the write-up and pictures of this old but still useful scope. You can also find it on my blog, where I added a few extra pictures and words:
http://mrmodemhead.com/blog/tektronix-465-oscilloscope-repair-and-restoration/
And if you like that, do not miss this absolutely awesome Tek restoration by EEVblog poster robrenz:
http://www.eevblog.com/forum/testgear/tek-7603-scope-w-7a18-amp-7b53a-timebase-restoration/
February 17th, 2013
One thing that always worried be about me buying a “not working, for parts” instrument like this scope is calibration. I wonder if this was an issue here ? How would you rate the accuracy of the scope after repair?
February 17th, 2013
As I recall, channel 2 gain was a bit off, but that was easy to adjust with just a DC reference level. The timebase was close enough that I figured I’d probably do more harm than good if I tried to adjust it. Oscilloscopes are not exactly precision instruments, even the digital ones.