开云体育

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 have

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 Hendrix

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 solenoid valve and

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

Tekscopes _was_ on Yahoo groups until yahoo started falling apart. Tekscopes then moved to Groups.io, where it is currently located. You may have misunderstood someone saying "io" and assumed they

Dennis used the term commercial. Paypal simply specifies buying goods and services. Enough on this. I made a mistake trying to use paypal in the honest manner I agreed upon when I opened the account.

Jeff, I tend to agree with Simon, this looks eminently fixable. I can't find a board layout diagram for the 475A but I do have one for the 475, it looks like the A9 boards for the 475 and 475A were

It didn’t look bad to me, much cleaner than mine, but nothing beats a good look through a jeweller’s loupe. The components also looked original. I think you may be over-worrying! Simon

Simon, I've been looking at buying a desoldering tool, as I've had only limited success with a hand pump and solder pencil, especially when I don't have access to both the front and back of the board