@ Dave(52 re 511A. Way back when, when I was a wee engineer, I bought a surplus 511AD from my EE department as surplus. It was a cool scope, but was way more seat of the pants waveform visualization

Is that a 3AG fuse? I think this is the Littelfuse cap you need: 03453LS1HX020 Mouser sells them new, for under $4 Somewhere, I have a bunch of new PCB mount fuseholders that take

+1 very good to deal with

If by “Greece” you refer to Qservice, I have found that the shipping time from them is ridiculously short. If the C19 pandemic has not affecred that too much, I would not hesitate to order from

Does anyone stateside have a spare Tek fuse holder cap/insert (200-2264-00) they'd be willing to sell me? The only ones I can find are on eBay out of Greece and will take a-month-and-forever to get

Greetings, I have a TM515 with a missing wire stand (referred to as a bail) which appears to have been made from ~3/16" stainless steel rod. I wonder if anyone here has had experience with obtaining

It's usually simple... once you know what it is. Dave Wise ________________________________________ Sent: Tuesday, October 06, 2020 6:17 AM To: TekScopes@groups.io Subject: Re: [TekScopes] 475A

I don’t know how you got access to the X deflection pins on the CRT through the hole in the interface board. Keyhole surgery? It might have been easier to remove the CRT after unsoldering the X amp

Well that's great news. Another TekScopes success we can all learn from... --Toby

PROBLEM SOLVED - After checking the components, voltages, and waveforms in the horizontal amplifier circuit and verifying that the outputs of the amplifier were correct, I took the advice of Tom M.

Since there was a request for this in the above discussion, I uploaded an image of the Tektronix 468 service rom to the files section. It's in a directory called "Tektronix 468 Service Rom"

Chuck, Thanks that makes very good sense. Although for us pin spacing is not a big issue. I have several small PCBs that take standard pin spaced modern caps and have either pins, screw terminals,

Seconded. Another Chuck Harris classic to "star" in my inbox for later rumination... --Toby

Thanks, Chuck, for an excellent tutorial! -- Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford Way Stanford University Stanford, CA 94305-4070 http://www-smirc.stanford.edu

I prefer a capacitor that is higher voltage, and larger diameter... more like the original's diameter... over a smaller diameter, lower voltage capacitor for a couple of reasons. First, to make a

Sorry that I haven't read the entire thread, but to localize the problem, you should first verify whether the outputs of the horizontal amplifier are swinging the amount that they should. If they are,

In that case, it might be well worth pulling the tube and inspecting for broken bits of glass in the neck. The 475A is well worth saving. Regards -- This email has been checked for viruses by Avast

Since this was one of the scopes that I have purchased on eBay, I don't know its history. The waveforms look correct on the deflection plates. However, compared to those on the plates of my good 475A,

Another good source was the old SGS or SGS-Ates 2N3055H, possibly also SGS-Thomson as it later became known; can't remember when we stopped doing hometaxial devices, it was a long time