You can embed links in your emails now to files, pics, etc. either on groups.io or elsewhere. I don't see any advantage to sending attachments. Bob.

I bookmarked the link to your blog that you put in the first message with this subject - thanks for documenting the summary info. Having it on tekwiki is great too. The 7854 is just a great scope I wo

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 for

If someone makes replacement parts maybe they can address the cause of failure. When the plugin is inserted they are often incorrectly slammed home with the plugin edge connector slightly misaligned.

If you have a bad filter cap, with high ESR, one thing you can do to prove to yourself that you found the real issue is to parallel the questionable cap with a good one. If the unreg supply and the ot

The -50V supply depends on the +50 unregulated voltage. The 130 V supply also depends on a good +50 V. You might want to check the caps C808 and C809 that's where I found a bad cap when troubleshootin

Looks like Amphenol may still make it: https://www.amphenolrf.com/connectors/sma.html?mounting_feature=424 Bob.

Here is an example .pdf on the Tek Museum it has some schematics which show the quality of reproduction.? It seems good, usable although not Artek quality but then that is probably because they are st

How about these? https://www.ebay.com/itm/LEMO-S-Series-2-Contact-Connector-Plug-FFA-0S-302-Belden-9452-Cable-16ft-NEW/143193301645?epid=13002506338&hash=item2156fc628d:g:pt8AAOSw1lxcnvV7 Thanks for s

I think you are right about the connectors being Lemo.?? When I get a chance I'll open the plugin up again and look for a number on the base of the connectors. Bob.

These photos aren't good but give you an idea what it looks like especially the front panel and connectors.?? I'll get some better pics later for TekWiki. https://groups.io/g/TekScopes/album?id=95106

Just noticed I did get a pdf manual for the PG503 from ArtMedia (thanks), so I'll modify my instruction manual want list to: PM407 and 067-00699-99. Bob.

Vince and Dennis, I'll take some pictures for TekScopes photo area and TekWiki both. I think the Ohms connectors are two conductor and ground small amphenol (?)?? type connectors. Oh yeah, the s/n is

Does anyone have any information on a Tektronix TM500 plugin 067-0699-99? It's a Milliohm-Voltmeter with a LCD front panel display.?? It has two front panel Ohms connectors labeled Hi and Lo, a range

Dave, Here are two that are on your list but I have not been able to find on Tekwiki or elsewhere. PM407 PG503 Bob.

Ed, That's pretty much why I bought a 5111, that is to keep my 577 company on the bench.?? I had given my 5223 to the museum and was cleaning out 5000 plugins until I bought the 5111. Bob.

Aren't these referred to as TM502A, TM503A, etc? I have a TM503A and it also does not have a fan of course since it doesn't have the space in the bottom, as you mentioned, for air flow. Bob.

Yeah, I was referring to the ROM images not manuals. Bob.

Re: ROM images, did you check here: http://www.ko4bb.com/getsimple/index.php?id=manuals Search ko4bb for 11801. Bob.

I agree with you on the age factor maybe not being the real issue. Many connector failures are due to just slamming the plugin into the mainframe. Unfortunately the plugin edge connectors don't always