Thought about this some more...I think the one that went for $450 actually had 2 1A4 plugins. <jamie.ostrowski@...> wrote:

In the last year, I have seen 7 complete 556's sell. Condition of them all was basically the same. Typical 1A1 or 1A2 plugins. No other info on their condition listed (as usual): $300 (Ebay) $450 (Eba

Thanks everyone for the tips. I'll try experimenting with my splicing technique using these ideas and see if I can come up with a satisfactory joint. It sure would be nice if I can find wire with matc

I bought a pair of 556 oscilloscopes from an electronics scrapper that I am restoring. I think I'm able to get the rest of the parts that were harvested from the person who sold them to the scrapper,

I would also strongly suggest watching "Lazy Electrons" Tektronix restoration videos for another perspective on how to bring an old Tek scope up and restore it. He does a really careful job and is ver

There is some Kester SN62 on Amazon if you need some more: https://www.amazon.com/Kester-Sn62-No-Clean-24-7150-8800/dp/B06W5WKZ93

Does anyone have any idea, statistically, of how many scopes die from beginners trying to repair them verses those that die to tube harvesters or relatives who have no interest in "Bob's" old scopes w

I'm not affiliated with the seller, just passing it along... https://sfbay.craigslist.org/nby/ele/d/sebastopol-tektronix-547-oscilloscope/7077862175.html

Thanks John. Is there a chance that even though that capacitor was spec'd at 600 volts there may be a possibility that other components in the circuit aren't - that they tossed in the 600 VDC rated ca

Thanks Nenad. This gives me some things to think about. I also do have a 1A1 plugin so I may go with that. It is rated for 600V but to your point due to the age I'm really pushing things to the max. I

Does anyone know what the upper voltage limit is on the CA plugins? I couldn't find the spec in the manual, and I'm interested in measuring ripple in a 550 VDC power supply so I want to be sure I'm no

I was looking at shipping up 3 500 series scopes from Texas to here in Minnesota for a buddy of mine and someone sent me a bid of $250 from u-ship to transport all three of them in a van wrapped in mo

I was wondering if anyone has had any experience using uship.com for shipping scopes or other electronics. If you're unfamiliar with them, they are like an Uber, but for shipping, including long dista

I really enjoy hearing all of these stories. There's so much accumulated knowledge and talent here it's just unbelievable! Thanks for sharing the memories...

Cool...interesting to hear that perspective. I am a young fogey (45), or old, depending on who you ask, and I've got a friend in the hobby about my age. We were discussing the topic of the welfare of

The problem is: Guitar amps and audiophool equipment feasts on Tek scopes for valuable BB and Telefunken tubes. Progression: We raise prices on vintage Tek equipment. Tube harvesters stop buying the e

Tube traders and audio nuts use them for sure - especially for tube matching.

Ha, interesting story. Yeah, I didn't even notice it was an actual auction. I would be surprised if anyone bids on that, but I could be wrong! Will be interesting to see what happens.

When the prices get that high, at some point you need to ask yourself how much it would cost to build one from scratch!

Interesting find, John. Thanks. I noticed it is in the earlier style case, too.