Hi Brad (and everyone interested in learning more about microscopes), You might be interested in joining the Microscope Forum on Groups.io. I can confirm from personal experience that they are a very

We have been finding all kinds of strange and bizarre items in storage here at Sphere, from unknown optical widgets and hard to find parts to 10KVDC power supplies. Plus, we keep filling up the Free

Well, that was fast! Everything is gone, so if I haven't reached out personally, I hope you see this post.

I have enough reply's/offers that I can say the VOM is spoken for. Thank you, Gordon

In my case the CRT is working in that the screen is lighting up but it looks more like a flooded storage tube. The entire screen is glowing and I can't change the brightness, let alone get a dot or a

Hi Michael, I expect the same transistors to be good subs for the actual output amp, too, so if the thing blows again, I'd give those a try. I don't know what Tek sorted for, but a (very) crude proxy

Hello-- My heartfelt thanks go to everyone who commented on my request for microscope information. Per the moderator's request, please send further comments directly to me

A little follow-up on the restoration of this scope. I’ve taken some time off from my current 2 restoration/repair projects to clear my mind a bit and do other stuff. To recap the order of events:

Hi All, I have a beaten, battered Triplett Model 630-APL VOM that is free for the postage. It has corrosion in it that I cleaned out a bit, but the corrosion has dripped onto some of the measurement

There's lots of signals on the distribution lines... some intentional and others by accident. I asked a broadcast engineer (worked on building several large AM and FM stations) and he seemed doubtful

Ok, some info I have not seen mentioned... The Stereozoom heads are affordable on eBay, but the stands and focusers drive the cost up. I use a cheap 'monitor arm' to support a Stereozoom 4, and find

Hi Doug, I also have a Sony/Tek 380 that shows no trace, I bought it as a cheap parts donor for my likewise no trace 335 and 336. Somewhere, someone recall mentioned his 335 having blown a Fuji

Thanks Tom, tho, a few notes: Those parts are for baseline offset, not output amps per se. No AC requirements, so, yes, fairly easily subbed. To "fix" the output amp, I just removed the offending

Where are they located? Do you have any contact information? I´m interested is some stuff -----Mensaje original----- De: TekScopes@groups.io [mailto:TekScopes@groups.io] En nombre de Tony Enviado

Hi. This topic again about a strange thing on the screen of a 2445. A ghost, not focused spot flashes randomly at a stable location on the screen, whatever the brightness setup, vertical scaling, tme

For the output amp, the NPNs are 2N3053 and the PNPs are 2N4036, replaceable here by the venerable 2N2219A and 2N2905, respectively. Those parts are still available cheaply. Q182 is a 2N3563,

40 messages on an off-topic subject is excessive. I think by now Brad Thompson has enough information to make a decision about Amacope and many other microscopes that may be an aid to his failing

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I picked up a little Sony/Tektronix 380 Video Waveform/Vectorscope recently. It powered up but no trace, just a faint glow on the screen. It looked to me that the X10 HV multiplier was bad so I dug

Well hey, it's right there in the manual: "LINE INPUT Power is applied through line filter FL10, line fuse F10, and POWER switch S10. The line filter is designed to keep powerline interference from