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mmh, the second time a text vanished ? In my own (yahoo) return copy, the text was there. After i tried to send the text again? - gone ??? strange behavior ... ------------------------------- Ok,

"Dennis Tillman" <dennis@...> wrote: I just tried banging on mine (with the filter off) using a big old Honeywell Strobonar that used to hang on a press camera. I've no doubt I fed it a bunch

You might want to purchase this: http://www.ebay.com/itm/Tektronix-475-Oscilloscope-Manual-ORGINAL-/28081&#92; 2488419?pt=BI_Oscilloscopes&hash=item4161ba86e3 <http://>

I did solve one problem with this little UV LED experiment: I now know how to take a photo of the Wiltron 640 RF Analyzer CRT. This instrument is built into a Tek 5000 series scope with a special

Ed, Brad I didn't think about the plastic in front of the CRT. Removing it makes the 7934 storage CRT glow nicely. Removing it from the 577/D1 makes the phosphor glow faintly in PURPLE! I didn't

Hi Brad, Correction to my original post where I said: "The other LED I tried was a 485nM one I just got." I meant so say: "The other LED I tried was a 385nM one I just got." 385nM is considered

Jerry, why you don't use empty (blind) panels ? Peter ============= Hi, I am building some 7K plugin kludges and need blank front panels. The 2 1/2"x5" panels with the turned up ends would be my first

Ordered a service manual, however it looks like a Lithium module on one of the end boards - made by Renata and marked 3V and "125-1". I can't find a data sheet for this thing, but I think its actually

Yes, UV LEDs are the way to go. The old school cameras we discussed had plenty of UV from actual UV lamps, or the high UV content from a xenon flash. The other variable is the UV loss in the plastic

To be honest I didn't think of that possibility. Anyway, there was a lot to learn from such a silly bad contact. Albert

<snip> Hello, Dennis-- Have you tried using ultraviolet-emitting LEDs? IIRC, one of the --HP-- oscilloscope cameras used a UV emitting lamp to light up the screen's phosphor and show the graticule.

During the discussion of the 576 vs 577 curve tracer I mentioned the 577 graticule was not illuminated which I find annoying every time I want to take a picture of device characteristics on the CRT.

Take care when you test power supply.I had repared 4 Tek475. But with the last something wrong occured the K tube filament burned!!!Something I d never explained as I have more than 40 years

Hi, I am building some 7K plugin kludges and need blank front panels. The 2 1/2"x5" panels with the turned up ends would be my first choice. 2 1/2x4 7/8" flat panels would be my second choice. They

Those are not the problem then. I was thinking that if the multiplexing diodes where not switching completely it would cause clipping in analog mode while allowing the readout and digital display to

Yes for Both A and B. Yes the timebase still in calibration for the part which is not compressed. At U7202A/B STORE .72 and 7.2 (this is lower then on schemtic 7.59) /STORE .55 and 7.2 (this is lower

wrote: Gah! I wish you had posted that initially. My suggestions assumed store mode worked or at least that it and the readout lacked any display problems. I would help if you said where Q2105 is. The

Well now, that was interesting, swapping Q280 with Q452 (same type) initially appeared to make things slightly worse, but when I pressed on the top of the FET to straighten it up to get at one of the

Thanks for the suggestion. I have pushed on the connector. It did not help. Store mode is currently not working. I currently have Q2105 removed. I am awaiting the arrival of another scope to

Jerry, A scan would be much appreciated. Thanks for taking the time to do this! Aaron