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

Hi All, My Tek 475 I bought locally about a week ago seems to work fine after cleaning all the controls. I have cleaned the front panel and it looks really nice. Before I put the cover on and put it i

I JUST SPOKE TO PETER KELLER WHO IS THRILLED YOU WANT HIS BOOK! ================================================================ These are the payment instructions for all of the INTERNATIONAL Orders

If you are using PAYPAL to pay for Peter Keller's book I cannot tell what choices you will be offered. PayPal may use different terms or language to describe your options. It is EXTREMELY IMPORTANT th

I made a post earlier about a mystery cable coming from the A4 board in my 2465B. but the more I look into it, the more I am puzzled about the A4 board in this scope. I can't find any photo or manual

Hello all, I have probably developed cancer. I can't get in for treatment. I have enough lumps in my body that it probably wouldn't make a difference. So more than likely I am dying. I am asking for e

Ok, here we go! Now I'm in it. Took the trigger/sweep boards out yesterday, no problem. I'm trained and somewhat practiced at solder work, so that in itself doesn't bother me. I was a little intimidat

I have seen that the Tektronix 2335 was available with “Option 03”. This provided a switch for 100V/200V nominal input voltage. The chart on the rear of the scope shows the range; for 100V, it is show

From Tim P (UK) Just got back into my quest for a working 5441 - I've given up on the instrument with the 'howling CRT' and bad storage board; that one had the fault where it would fade positive in NO

Hello all, I just joined yesterday after looking for a good forum group to connect with regarding my rekindled interest in Tektronix oscilloscopes. My history with these scopes goes back to my Army da

*Many thanks for all the replies from members. * *I checked the pins to make sure that they were soldered and even re-soldered them carefully.* *I know it all depends on what kind of open there is and