If I am not mistaken I removed the photo and replaced it with a notice that we moved to groups.io over 2 years ago. I just checked and confirmed this is correct. Dennis Tillman W7pF

Larry, You MUST (I don't want to be rude either) have a look at Tekwiki in general and for your question more specifically at http://w140.com/tekwiki/wiki/Reference_material, then the first entries

Mr. Lynch wrote: Are you referring to a specific Scope manual or is there a general 'TEK Cross ref.' and is there a general 'TEK transistor guide'? May I use your first name when referencing you?

PM me. I can't find your email via the directory. I have a parts 465 that I can take one off of. I pulled the vertical board and vertical switching board out as one unit but it still looks like it

Hi Shailendra, After such career you should be an expert in computer science! I left IBM for 6 years of engineering school, then 5 years as field engineer for Schlumberger, then transferred to

Thanks for the reply. The BNC that was in the scope had the center wallowed out and I had a heck of a time getting any connection. In retrospect I should have put another piece of wire in the hole

There were several responses to your original message with great ideas and information about dealing with the 7854 ROM board issue.  Would someone be willing to summarize the best ideas and options

Hi Tim, You should be aware that these input BNCs are an absolute pain to remove without a whole lot of other disassembly. The big problem is getting the mounting-nut unscrewed. It might be easier to

Hi, I'm refurbishing an old 465 scope and the channel 1 BNC input is damaged and I need the connector. I installed an un-insulated one but would like to get the correct one. The Tek part number is

Dennis You might also want to change the colored logo photo of the inside of a scope to a Text-based image "Moved to Tekscopes@groups.io"

Hi Ernesto, I stand corrected. How can you forget the dynamic timer....having worked on data processing machines of that bygone era. I have followed a very similar path as you, but I jumped from 447

Might have been a timing capacitor they had a lot of, hence the very precise value. Me, I'd give it about 100 volts headroom.  Then again, I tend to overdesign stuff. Harvey

I think it is a typo instead of "EDAC". Just google "345-076-520-201" Ernesto

Sorry that I am late to this thread, I had a really busy day! I don't know, I think some of the folks on here are right, that it may have just been an overstock and they decided to use this value.

What is “EORG”?

Thanks, Walter. Somebody needs to buy the Tektronix 7934. Those are pretty rare and $375 is a good price (at least IMHO). DaveD

The female connector used in the 7000 mainframes seems to be equivalent to: EORG 345-076-520-201 Ernesto

Hi Brad, A while ago I received a private message from Dan G. to make me aware that the can of C401 is floating at a negative supply. I appreciate very much his use of the private message to

Does anybody know around which serial # the 2440 switched from using a backup battery to using NVRAM? I'm looking at purchasing one on eBay that has an FPP diagnostic error - serial #B013530 (I

"Now U301 is listed on the schematic as a "safety part" . Following back from the parts the manufacturer of this little assembly is still in business and you can actually order the part against the