Wow, this is almost enough to make me take another shot at repairing my TEK 465.
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Power standing wave null… solution
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Power standing wave null… more left readers with “homework” to create the
Pfwd and Prev traces. Remember that Pfwd and Prev are interpretations in
the cont...
5 hours ago
I had one of these with the DVM module on top. I got it in a garage sale from a former employer, when they went out of business in the mid-80's for a few dollars. It turns out that there was a bad cap in the vertical amplifier power supply, that would self-heal after a few minutes (time got longer and longer until it no longer self-healed). Until then, there was a monster 60-Hz signal on the trace, which forced the trace off the top and bottom of the screen. I even went so far as to find a repair manual in the Dayton flea market, and even bought a cheap B&K scope so that I could use it to fix this one, but never got 'round tuit'. Eventually, I gave the scopes, cart, and manuals to a young college-bound student in our local radio club, and never saw them again. Really classic gear, but hard to fix if it went south.
ReplyDelete73,
-- Dave, N8SBE
I agree Dave: hard to fix. High voltage in that box. And --- this is what really bothered me -- PLUG-IN, SOCKETED transistors. They would easily fall out if bumped. Yuck. 73 Bill
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