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I have one of those. Real work of art. Peter

opt.78 Looks perfekt with a smoke filter from Tek, see http://www.wellenkino.de/7844/ greetings Martin Gesendet von Windows Mail Von: TekScopes@... Gesendet: ?Mittwoch?, ?23?.

Optimized the layout to increase ground planes. Determined fixed resistor 'calibration' values that work within the LM358 offset spec. Retuned the ref diode schottky input network as I am using

Keep looking for corrosion damage like a component connection or opened run, or remaining crud (especially on/between IC leads) that you may have missed. An old toothbrush is good for scrubbing. It's

convince the cool. The blue is surprisingly hard to look at. The eye does not focus particularly well on it, and the eye is less sensitive to blue as compared with regular green phosphor - so fast

He, he, Sigur?ur ?sgeirsson. Agreed! :-) Qservice indeed shipped to Montreal, Canada. I got even a printout of 7854 service manual from Dino (Qservice). Which part of Canada are you in, Snapdiode?

Hi Alex, You may have luck by visual inspection for bad components. I prefer a more systematic approach. You didn' t mention whether or not you have another scope to do measurements in th 545A? In the

No;) I didn't grab it, was asking who... Hoping it was somebody here... I was still trying to convince the "finance committee". I do have an eBay search set for Tektronix Opt 78... Just think the blue

They are a good and unique capability scope. Looks like some cosmetic things need sorting out, and I hope that it arrives OK and without damage. I bought mine 3 years ago for the same sort of price in

I've used qservice in the past without trouble. I'm in Montreal, which although in Quebec, still remains part of Canada. Maybe you can email them to work out postage? TekScopes@...> wrote:

Sorry, I did not realize you were in Canada -- I went and searched for shipping in the US. If you are near the border you could get it shipped to one of those drop-box places or a friend for around $5

So who grabbed the really nice deal on the 7844 OPT 78 that just sold on eBay? Hope it was one of y'all! Nathan KK4REY Sent using CloudMagic Email

Do you know where I can buy 16 space suits?

Oh and I had a moment of sanity and remembered that ty-raps are made of Nylon. Doesn't melt at the same temperature as the pot so I'm back to believing they're Delrin.

Hi Ancel, I'm curious what change(s) did you make? And do have a suggestion as to what might cause what you're seeing? Cheers Dave

A man has to have his priorities. Mark

Thanks but they don't ship to Canada.

Because it's probably just as cracked as the three other ones I already have.

I am not sure what kind of capacitor that is. The oil-paper ones I am familiar with use a hard Bakelite case. And if that capacitor is C165, I do not think it can cause this problem. What the manual

Hello all, I have been a group member for a while although not an active one, I recently bought a TDS 544A and TDS 540 cheapish. Work has started on the 544A it used to: FAIL++Acq/Proc Intf,