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Hi Leo, Glad the scope is back to life, however as you noticed... trying to use salvaged parts that don't quite fit the bill, is a waste of your time as the scope only half works... overheating as you

Hi Bert, Vincent and others, The ringing test made sense to me, its is relying on the fact a

I have watched this thread from the beginning - lots of good points and info. Here are some observations that tie the paths of snubbing, switch arcing, and relay response, and may indicate the true

And the DM44 mod kit says B050102-up so it should be OK. Obviously the correct info is missing in the RPR. /H?kan

So far as I know, I don't need any. The post was mostly for Tam's benefit. I'm a severe technogeek who has been obsessed with all the things there are to be done and all ways there are to do them

Hi Jim, Feel free to send me the pictures (PM to fabio.tr3visan@...). I will be glad to post it to the photos area of Tekscopes.io, and reply to you with a link to the folder. Rgrds, Fabio

As did working with a 10 Henry choke back 25+ years ago for me.? Transistors kept dying when I switched off the power, and when I had my finger on the wrong spot, I instantly knew why!? Zap, a

Hakan, this 464 is sn#B145646 it has the latest dash number -16 A6 inter board and the 3324-01 board is correct. I took some pictures of it but I am not using a photo posting svc. at this time so can

The IC controlled Trigger board as well as other improvements was introduced at SN B200000. The Service manuals 464 / 070-4795-00 and 466 / 070-4796-00 are for B020000 and up. Before that SN the

Fabio I have the pictures but I'm not using any kind of photo posting service it's gotten to complicated and I don't post much to forums anyway so can I send them to you and you can post them up? Jim

Reginald, I can make some knobs in castable resin with my SLA printer if someone wants to make some molds. Mike kd5rjz pulaskite@...> wrote:

Actual URL please???? Kevin

If the previous link didn't work - try this one. <https://web.archive.org/web/20170824191450/http://www.reprise.com:80/host/tektronix/home/default.asp> Rolynn

Hello Jim, I owed and restored a 464 with DM44 (now given to a friend) and I don't think there are any other "optional" boards linked to the presence (or absence) of the DM44. The only optional boards

===================================================================== Use this... <http://www.reprise.com:80/host/tektronix/home/default.asp> Rolynn

I can't get through either.? anyone able to check with stan for details? it would be a shame to lose that content. -walter -- Walter Shawlee 2 Sphere Research Corp. 3394 Sunnyside Rd. West Kelowna,

Having a resistor R in series with the back emf diode means: ? - the peak reverse voltage is higher: not ~0.6 but ~0.6+IR ??? where I is the relay's on current ? - the current falls faster, since

I did a little study on back emf diodes for relays back when I was a young engineer, and had noticed how a relay with a back emf diode was quick to acuate, but slow to release... thus subjecting the

I once read somewhere that one of the major relay vendors, don’t remember which, suggests that a 10 V zener diode is inserted in series with the fly back diode. The purpose is to make certain that

His IP address was 50.246.236.85 which is pointed to by the domain "reprise.com". It is a standard Comcast address. "ping", "ftp" or a website (http) are not currently active at that address. Lyle