Hi *, I start this new thread on the new issue seen after fixing the PSU issue from now ended topic: https://groups.io/g/TekScopes/topic/79486087 ;o) Hands back on the 485and starting from some Servic

If anyone's looking for one, there's a new listing for a 1S1 sampling plug-in. https://www.ebay.com/itm/Tektronix-Type-1S1-SAMPLING-UNIT/284211115843

https://www.ebay.com/itm/CS-TEKTRONIX-TYPE-1A2-DUAL-TRACE-PLUG-IN-UNIT-TP714/193010214887 This thing looks like it went through a black hole and came back out a few times.

Down the rabbit hole again... of unobtainium tunnel diodes, that is. I couldn't get my "new" 3T77A to trigger at all. I'm actually not sure if the 3S2/3T77A/561A combo allows internal triggering or no

I bought some cheesy no brand keys and they're useless. The 0.050 (1/20") key just sort of cams around inside the set screw. What brands do you recommend?

I bought a very inexpensive 7623A on the auction site and it just arrived. The aluminum cover on the back was dented in, and there was some damage to the low voltage regulator board (the fuse was shat

HI All... Got a Tektronix 2215A. Channel 1 was bad, no signal coming through. Channel 2 fine. Found Q122 Jfet on channel 1 was a J210 part # and bad... already replaced a while back perhaps? should be

Hello gentlemen, My first post here, but I've been looking for information on this site for a long while. Some 8 years ago I bought A TDS544A with normal caps issue; that was solved (removed all old c

Hello, I've read this group off and on for several years. Finally joined. I am a BSEE of ~30yrs and have used Tek gear since technician school in the mid 80s. My first scope I owned is a 1956 type 531

Hi, I have successfully retrofitted the 5S14N sampling plugin with readout for use with the 54xx scopes, by basically recreating the 7S14 readout board and wiring it in, thus creating a 5S14. See the

On 2021-03-07 7:03 a.m., Dave Daniel wrote: > Someone should snap these up. $89 is a good price. > Someone did. (Not me) I wonder if they are all scanned and online? (I know a handful are) --Toby > Da

Just want to bring this to your attention: https://www.ebay.com/itm/Group-of-14-TEKTRONIX-Electronics-Handbooks-1960s-1970s-Vintage-Electronics/313430432838 (Not affiliated!) Seems to be a real bargai

Hi All, My TG501 1ns output died. I suspect it's CR515, the 4V hot carrier diode at the start of the 1ns section. It's just a rare sized barrier Schottky. If I understand the circuit correctly it adds

Does anyone have reference material or procedures to weld an open filament on a CRT? I understand that with the judicious use of a large capacitor and a high voltage, it is possible to weld a filament

The following photos have been uploaded to the Sampling with 3S2 album of the TekScopes@groups.io group. 0306211734-00.jpg 0306211734-01.jpg 0306211736-00.jpg By: Charles <charlesmorris800@...>

Hi, I have a Tek 2335 that reads “OPT A1” on the front panel, next to the serial number. So far I’ve been unable to find anything about this. It’s neither in the 2335 manual, nor the 2336 one. These o

I have a tek 2455b with option 01 dmm and was wondering if there is a front protective cover for this scope.

Hello All I have a 7704A with 2 x timebase: 7B53 and 7B50 The 7B50 has developed a fault suddenly and the screen is now all lighting as green and cannot see the trace anymore when using this timebase

durechenew@... added the album TDS544A with strange display

The following photos have been uploaded to the Sampling with 3S2 album of the TekScopes@groups.io group. DSCF0216.JPG DSCF0217.JPG DSCF0218.JPG DSCF0219.JPG DSCF0221.JPG DSCF0222.JPG DSCF0223.JPG By: