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Managed to score a 3852A with 4.22 installed and a 256kB card. Should help figure out the way this stuff works.

I suppose I was being somewhat picky. Apologies. Barry - N4BUQ

Hello to all members. My 3400 developed a "stuck range switch" symptom.? At first it was a bit hard to turn and now it is completely jammed.? I cannot turn it even with pliers.? I tried IPA to

Yes, I guessed that Robert. And you stangely don't seem to be one of the fussiest... Renaud

Yes, you have to remove the rivets. I doubt even the fussiest would complain about them being replaced by screws.

I've never had to repair it, but I have a 3400A that I really like as well. A friend who died left me a second one; I've not checked it out yet. -Dave -- Dave McGuire, AK4HZ New

Not only are they very nice instruments, they are (to me, anyway) enjoyable to work on - anything other than the thermocouple or meter movement can be repaired and it is easy to access the

Thank you Martin !!! Congratulations for your beautiful internet pages. Have a nice day. Maurizio.

I ordered a IEC-320 C6. As Barry says it would be indeed perfect if it could fit in the original holes after removing the rivets. You'll know! Renaud

There is an 8510C in Telford, Pennsylvania that is in need of a new home. The system does not include a source. It does have the 8517B 50GHz test set and the Time Domain option. Includes a rack with

Oops - just realized I wrote 5886 tube (which was one of my favorites - electrometer tube), when I meant to say 7586 (Nuvistor).? Ed

Sure thing, looking forward to it. I always learn from the discussions on this forum. Safe travels, wherever they may take you!

Thanks Hal, I'll start on the PS caps, but measure them all in-circuit first, and replace only bad ones. I think the PS board is plugged in, so should be easy to access. My collection has a number

I'll be traveling for the next several weeks - we can pick this up when I (and you) return to our normal chaos !

Hi Robert, I presume that in order to replace the PH163 with a C5/C6, one still has to remove the rivets, correct? If so, the rear panel isn't completely unmodified but the PH163 could be replaced

I like your suggestion very much, Robert. Thanks for the great (and safe) tip. -- Cheers, Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 420 Via Palou Mall Stanford University Stanford, CA

Your effort is *very* much appreciated! Vielen Dank und Viele Grü?e Ulf Kylenfall SM6GXV

+1 on the C6 entry modules.? I use the following and it makes for a very easy upgrade - at least compared to nibbling out the hole to accommodate a standard IEC receptacle - without having to resort

The symptoms you describe could be caused, as you point out, by several different things.? Personally I would lean towards capacitor issues as a "first check" item - I've worked on 12 of them so far

My solution on my 5245L was to solder and heat shrink wires directly to the connector. It will never pull out and is probably safer than a 60 uear old cord. Still working fine.