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Thursday, July 6, 2023

The TEK 465 'Scope Used to Create Pong and the Apple II


Wow, this is almost enough to make me take another shot at repairing my TEK 465.  

 

at 3:01 PM
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2 comments:

  1. Dave NewJuly 7, 2023 at 3:25 PM

    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.

    73,
    -- Dave, N8SBE

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  2. Bill MearaJuly 7, 2023 at 6:08 PM

    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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