Hi all, I recently acquired a *very* interesting Type 1S1. It is serial number B 11, and seems like it is very likely to be a prototype. It's in very nice shape physically, but has serious electrical

Hi, I am desperately looking for the instructions that Tek. used to attach to the P6042 probe transformer/hall assembly T1 replacement kit (050-0439-00/01). Each kit came with three selected resistors

Hi All, I'm on a Tek buying spree! I need some gear for development projects and I'm tired of waiting for stuff to magically appear for sale. I need a 576 curve tracer. I have a few analog projects an

Hello everybody, I am writing about the attempt to transform my TR503 into TR502 to use it with the SA 7L13. I started by replacing the 55 MHz crystal with a 52.5 MHz one (thanks James) and after some

The following photos have been updated in the P6042 album of the TekScopes@groups.io group. 20210226_141836.jpg By: snapdiode <snapdiode@...>

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

Hi, I have bought a 7S14 with bad batteries. Hi have replaced batteries for leds, but IR, three in series, 0,9 v for led. https://groups.io/g/TekScopes/album?id=131745 How works delayed time base, is

Hi I would like to have some advice on a strange problem with my 7104 oscilloscope. When I power on from cold state the oscilloscope is pretty well focused with little astigmatism, during warm up it g

First time poster here. I’ve been reading many posts and learned a lot from you guys. I got a 465B from eBay and I’m having a problem with getting the trace to focus properly. Even after checking and

The recent discussion about tunnel diodes got me wondering about when they were being designed into Tek instruments. Questions: - introduction date and model of the first Tek instrument with tunnel di

For people in the Seattle / Puget Sound area, this person has several vintage Tek scopes still for sale. Quite a few of them are 500-series, and a couple have carts, so these items are for local picku

Hi, everyone. I've been working on a Tektronix 606A XY Display but the unit resists all my repair attempts. So, I'm reaching out to this group for suggestions and assistance. I've documented my proble

Hi all, I was starting to check and calibrate my 465B which I haven’t used in a very long time, when I noticed that channel 1 behaved very oddly on some settings (mainly but not only .1 and .2 V/DIV).

While waiting for my Schottky diodes to repair my S-1 (and possibly my S-2), I did some searching for currently available substitutes. The late, great Bob Pease once wrote: "One "diode" that does turn

Hey y'all, After the talk about grounding and X caps, etc, I figured I'd take a look at the 465B power supply schematic. To my surprise, it's a linear supply, no switching there and hence no noise sup

Hi guys, I was checking my 485 against calibration 1kHz and 1MHz signals. - 1kHz is nicely displayed by the scope. - 1Mhz is not giving me a "perfect" square wave. I hooked up my cheap FY32124S functi

I just checked the UPSP tracking info for all the tester board set shipments mailed on 2/11/2021 and find the following on 2/20/2021: 1. All but one USA shipments are delivered 2. One USA shipment to

Hello I am interested in refurbishing a Tek 7854 for myself. Is the board and overlay by Holger Lubben available for purchase? Are there certain serial number machines to which this board applies? Are

From Tim P (UK) I ask here as I saw this mentioned regarding a Tek 22xx-series(?) My problem is a Philips PM3311 which popped a RIFA capacitor, with copious amounts of smoke. The PM3311 has this cap a

Got the scope without probes, Is getting a couple of P6137 the right ones to be used as a general purpose probes? What about HF/VHF/UHF 50Ohm signals? Could I tap these with a dummy load or do I need