If anyone has a friend who might have one of those, or may have worked with them, would you mind reaching out to them and asking around? I'll make sure to make it worth everyone's time. I just want to

Very odd indeed! It's all been there for a while (perhaps years), so I don't know why Roy is seemingly uniquely afflicted. --Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford

Yes; I know I have. See the main page: http://w140.com/tekwiki/wiki/Main_Page "If you want to add to Tekwiki or improve existing Tekwiki pages, please email the administrator for an

How odd, I can see the 475A Service Manual (less schematics) and a collection of schematics on TekWiki, so that makes at least two of us. Are you looking at the right-hand side of the page, where I

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:

Thanks everyone. Not really bothered about the dependency on a control unit for two reasons. First of all, finding /anything/ of this era will be difficult, whether it's the rarer RS232 kind, or less

Hi Jeff: I'm not sure why you are claiming this. TekWiki was down (at least here in the colony) yesterday... but I still only see a "service manual" for the 475, and not the 475A. As I posted. I

Hey again, maybe this helps: https://web.archive.org/web/20191222171302/https://stackframe.org/tekfwtool/ ? Siggi

Hey Steve, there's a thread about this on EEVBlog: https://www.eevblog.com/forum/testgear/tds-744a-(-friends)-firmware-reverse-engineering/50/. Sadly it looks like the github repository linked is no

I'm still looking for instructions on the "hidden" commands to save the ROM contents for my TDS784C, TDS220, and even my HP4263A, HP8595E, and HP8714ET. Google hasn't turned up anything. Steve

Hello Dave, The 3A1 plugins that I have come across ends up not only the 6DJ8 tubes missing, there are 2 8233 tubes that end up missing as well. There are 4 7586 nuvistor tubes in the front end, but

There was a species of 327x control unit for remote sites, that connected to a modem by a RS-232 interface. As I recall, on the earlier versions the control unit address was set by DIP switches, and

I went the "Cheap Chinese Route". I agree with Paul, the key, regardless of the tools used, is "Practice, Practice, Practice". My Chinese Hakko knock off works really well, when used properly and

The early IBM terminals (e.g., 3270) were driven by a control unit that was in turn connected to the IBM channel interface (Bus-Tag/ESCON/FICON). The control units connected multiple displays.

Practice, practice, practice :-) I had an Ungar, but replacement parts were getting hard to find. I seriously toyed with the idea of getting a cheap station and fitting it with a

You could ask Curious Marc on YouTube, he's a fan of '70s HP stuff but there might be overlap. He rescued some IBM hardware too.

I sense a lot of people being whiney at the moment. I seriously wish I had the amount of time to spare you lot seem to have. <political rant removed, to save Dennis Tilman the effort> -- With best

Hi all, sorry for the offtopic message, not sure where to go with this one, so I thought the smart heads around here might be connected somewhere. I'm looking to get a 70s IBM terminal, either for a

Hello everybody, I have followed this forum for a couple of months. Seems to be full of information. I have just re-capped 7603 mainframe successfully. Both vertical slots basically work (tested with

There are numerous desoldering tools, some of which show up at a hamfest.  The most successful ones (IMHO) are the ones that have a hollow element and suck solder through that into a chamber.  Of