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http://w140.com/tekwiki/wiki/155-0035-00 has details and links to data books.

I am looking for a couple batteries for the Tektronix RFM90 signal level meter. I have been told it is the same as an old Nokia cell phone, but so far I have not had any luck finding any of them. Does

OK. I will say 90% chance C741 is bad, 5% chance CR741, the bridge rectifier, has a shorted diode in it and 5% chance something else. C741 is a single unit, it can be replaced with a part of equal or

responses interleaved not sounding so good To quote RJS:? Gee Bullwinkle, that never works. Ok, now disaster control. Ok, that's actually part good news.? Not likely that you've damaged the frame

I'd love to have a front cover for my 485 as well if someone is fortunate enough to find multiples! Mike Harmon, WB0LDJ mharmon at att dot net

Thanks gentlemen. I have read the voltages across both C741 and C761 as Dave has advised. I used the Beckman HD110 and read to ground. I.E. the black test lead was alligator cliped to the chassis and

Roy, Thanks, Thanks; looking in the appendix; I see there's a comprehensive description of the generated signals included there.? While the 465 is a great scope,I am looking forward to the increased

I’ve made quite a mess... I wanted to check the voltages. I plugged in the extender and forgot to power off the TM, and didn’t insert it correctly. I blew the 2 +/- 35v fuses. Replaced them and

Most covers were separated from their ‘scope when the company that bought the ‘scope started using it. When the ‘scope was retired, the cover remained in a cabinet or whatever and was later

If you have a service manual, spend the time to read the functional description while following along in the schematics. My starting point was smoke and lots of it. I'm going to be busy for a while

They are miniserts see: < /g/TekScopes/files/Minisert.pdf>

Definitely, it is exceedingly rare that you can adjust your way out of total failure. -Chuck Harris Dave Hills wrote:

The thinking was: ... transistors are expensive, very variable in their gain from one example to the next, and we are not so convinced that they are any more reliable than vacuum tubes. So, we need

I have used these and I like them except for the fact that they are obscenely expensive at least when I have been able to purchase them. I have ended up pushing the pins out of machined pin IC sockets

Well... I'd claim the TDS2052B "trace" it is closer to the 465... than many other Tektronix DSO. (You've got the so called digital phosphor.) Anyway... the signals the "Training 1 Signal Board" put

Are these the type that have a sort of rubber grommet at the top that the pin goes through? -Dave

This is what you’re referring to: /g/TekScopes/photo/252113/0?p=Created,,,20,2,0,0

Hi Egge; no, maybe I didn't explain myself very well - the 'sockets' I referred to are actually three individual tiny contacts on the PCB into which the transistor leads go directly. Not an actual

Alrighty, I've successfully made a couple of these and tested them out (although I don't own the actual fan/scope). /g/TekScopes/album?id=252111 Threaded and stud added (m4x0.7), I'm

.... well... I'm out here in the colonies (not in CONUS) ... so if someone has covers for 400 series scopes... out here in the colonies... P.M. me... I'd like to get some. As an aside... it's odd