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Did you check or replace Q944? It's possible for it to be damaged during output transistor failure. If Q944's B-C junction blows open, it's possible for Q939 to supply enough base drive through R944

The 107437 is a Tektronix Guernsey numbering - unrelated the Bxxxxxx number from Beaverton - I imagine there's a correspondence but I doubt it was documented. You best bet is to compare the board

I all. I am a lucky owner of an old DSA602 From tektronix. It work fine but the batteries (Memory and CPU) are tired. On power up, the scope show an battery error. Is anybody know what type of

The scope shots in the last post were taken on the output I probed the collector and emitter voltages and it looks like the transistor is in

I replaced the transistors with a more matched pair (hFe for both transistors was 73 at a Vbe of 550 mV). The circuit still does not start up reliably. There is another mode of oscillation at a few

Just got the pictures from the seller, it is the old type/brown one. So not sure where to go from here and if it even make sense to start restoring it or sell it for parts (again)..

On Tue, Feb 13, 2024 at 07:59 AM, Tom Phillips wrote: "...The "high" serial numbers for the 465B are S/N B0600000 and up..." That should read "B060000 and up." Apologies for the typo. I sure wish we

Local pickup would be ideal. I'm told there is more Tek stuff, but I haven't seen it yet. The owner now knows there's interest, so there's likely to be more info soon. -- Jim Adney Madison, WI USA

And I THOUGHT I had also set that up in my sig file, but now I see that it's not there. Now it is. -- Jim Adney Madison, WI USA

On Tue, Feb 13, 2024 at 04:19 AM, Don - AC2EV wrote: "How does one tell if the scope is a low serial number or a high serial number? My unit is #107437 as indicated on the front face. There’s no

I'd very carefully drill it out.? You might find that they glued the tab on the shaft.? I haven't tried to remove this kind of tab, but that's what I likely do. Harvey

You won’t be happy with the results of a “cheep 3D Printer”.

Greetings All, I have been using JLC3DP.com for printing my parts. Their quality and available processes are very good. They can print 316L stainless steel. Very good stuff! The pull tab parts are

Adam: Thanks for the link, Very nice looking replacement latch parts. I was unaware of the inner parts, although only needed for a full replacement As for the pull tab part, I made a bunch of these

How does one tell if the scope is a low serial number or a high serial number? My unit is #107437 as indicated on the front face. There’s no letter indicator.

Re: Adam R. Maxwell Wow, I didn't know such a 3D model existed for those! My school has a cheap 3D printer so I can use that to print it. If I'm happy with how the new 3D printed version works, I

I have always hated those suckers. I've broken far more than I've saved over the years. I think in the later years a new design was adopted that could be taken apart and put back together. Probably

Barry Breaux just posted photos of a sectioned pull tab, and it looks like you might be out of luck even if you can drill that dowel out, unless the hooks spring back. Reminds me of a fox-wedged

Yes, it appears they glued this particular one. Even when I put my entire body weight on the pin, it wouldn't budge. Any recommendations in this scenario? -Benjamin

You can try Artekmanuals.com! They have an extensive library of Tektronix manuals https://artekmanuals.com/manuals/tektronix-manuals/ They are reasonably priced and they get them to you usually