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I am quite late to the party when it comes to old scopes. Have a couple of old Heathkit Tube scopes, but no TEKTRONIX tube scopes. I do have several slightly later transistorized scopes, and

It is good to hear from a younger person collecting and enjoying older equipment. The 500 series is still viable for occasional use in a sound system shop, space is more of a concern in most cases

I did not remove mine, when fixing mine. It was little dusty so I used a brush. It works, so I don't fix what isn't broken.... ha ha ha BUT my memory isn't that good to remember if it is glued or some

I have an SC501 I looked into awhile back but life got busy and I didn't get to resolve its issues. I've got some free time so I'm back at it. The CRT shows no trace whatsoever. The unit burned out

I'm 44 years old. I've never worked with one of the 500 series professionally, so using these scopes doesn't really "bring me back" to days of working in a TV repair shop, so for me it isn't about

I've already pulled on it harder than I was really comfortable doing; however, the instructions state to use "firm pressure" to pull the fan blade off. I'm wondering if the slotted screw is intended

This Jim Williams sounds like quite a guy!

Greg wrote: "a stable and reliable product that may have grown gray hair" - that sounds like me! Greg and Chuck both make good points. Nobody today would use the old instruments for professional work

Hi Kurt- I think the Type N is probably the rarest of the letter series. I have the only one I've ever seen for sale and I found it back in the early/mid 80s. Have not seen one on the market

Hi Chuck- Actually, if working with RF anywhere in the lower HF range or MF (such as AM bcst) or any number of analog circuits, the old 500 series mainframes provide plenty of bandwidth. And the

My "G" plugin is on the way for my 547. :-)

I can't help but chime in as well. My love of the vintage scopes started with a chance opportunity to acquire a very nice condition Tektronix 503 about a year ago thinking the differential inputs and

Hi Morris- I *might* still have a spare. I'll check the next time I get to that storage unit and will let you know. And please don't hesitate to contact me off-list to issue a reminder! :-) Have

Certainly nothing wrong with enjoying the aesthetics of the old 500 series scopes. By all measures, the modern sportbike motorcycles outperform the cruiser Harley Davidsons in acceleration and

They are VERY FRAGILE! Do not apply much pressure or it just brakes. I don't know how to remove it without braking it, sorry!

wow.... guess someone got the hots for 50mA tunnel diodes. Luckily, I got my greedy little hoarder hands on one just in time. I guess something like this diode is used in the S-52.

Got everything removed except the fan. Any hints/tricks to getting that off? Loosened the nut but the fan blade won't budge and I don't want to pull any harder unless it is recommended. I have a

https://www.ebay.ca/itm/Tektronix-152-0275-00-50mA-5pF-Tunnel-Diode/283433295019?hash=item41fdf0dcab:g:h0kAAOSw2cRcc3Sb

Thank you very much! Tony

This project of mine might provide some useful info. https://hackaday.io/project/163890-tektronix-2465-series-servicing AB