Weird. I NEVER have a Captcha / Not A Robot screen or button when using PayPal.... I do not save my password. Have to enter it every time, my choice. Works for me. I do not understand the "how far alo

Hey y'all, I just scored a Model 3 cart for my 7834 locally. After relocating the scope and the modules I have from the floor, I played a little bit with my 7S12. Initially I had my S-52 in there with

I've got a 475A that I acquired for parts (for a 475) but it looked like an interesting repair project, so I've been trying to fix it instead. I managed to fix the low +110V rail simply by unsoldering

Hello to all, I should have many 3A1/3A6 and other 56x series plugins in my stock. The problem is they are on the other side of Ohio at my other house. Let me know what you want and I can look for the

My main pleasure with equipment is finding inoperative or basket cases and restoring them. I just finished a 2230 and an R-631B. This is an account of the projects, skip now if you aren't interested.

Hello Dennis, To pay with PayPal, it need more than MarianT@... . I don't know what the "..." is. Clearly, I'm lesserly smart than others, but I just don't know what to use. Thank you, larry

I was wondering if anyone was willing to make the boxes for the multipliers so ones that go bad can be made. The box would need the holes for the wires and mounting threads as original. The old epoxy

I am looking for the schematics of the two military scopes. I prefer paper or print-out. Thanks. Mark

I know some of you guys deal with older computers and PCMCIA cards so I figured I'd offer it up here first. I have an ISA bus PC Card adapter (card that goes into the ISA bus and you can plug a PC Car

IIRC, the 3A1 uses a pair of 8233 tubes (look like oversize 12AT7 or similar, but not compactron) which, for some reason, are prized by audio-phools. So they go away. RegardsJeff Kruth In a message da

Hi All: There are copious discussions about the 475A service man, and schems, on TekScopes But, I don't find a 475A service manual on TekWiki... but it is on the Web, and pretty good scans of the 475A

Checking out a recently arrived OCP5502. Fails on 'ZERO' operation. TEMP indicator illuminated continuously. Hot smell, faint smoke from region of optical receiver module after a minute or two... Does

I have had PayPal for many years and it has gotten a lot of use for both buying and selling. Mostly buying the last few years. Also many years ago I did a group buy for over 1000 Nixie tubes that I th

All, Tekwiki is a website for the community of Tektronix oscilloscope enthusiasts. It started in 2008. It is edited by many people. You can browse recent changes: https://w140.com/tekwiki/index.php?ti

Further to some very reasonable requests, we have added new (and cheap) color LCD displays and other interesting bits to the R+D Magic section, as well as a new category for Audio parts and equipment

I am new here. Please excuse this simple question. I have flailed for a few days trying to answer it myself. I read many directions to “search the archives.” Can someone point they way toward same? Th

Hey all, As part of my 465 tear down experiment I got the CRT out today. What a fascinating and terrifying experience! The good news is that it went off without a hitch. It's not complicated at all, a

I had an occasion to recently part out an old Tek 520A NTSC vectorscope that was one of two lying around in storage given to me by a past client. To say the least I was impressed about the packaging d

Anyone know what the Tek part no. for the CRT used in the TAS 475 is? DaveB, NZ

Hi everyone. I hope you are all doing well. I recently purchased a Tektronix 1107 dc supply for 2200, 2400 and 2300 scopes. It’s kind of neat, mounts directly on the back of the scope. I tested it tod