I am working on 2 Tektronix function generators. An FG 507 and a FG 502 both 2 Mhz. The 507 is on the bench currently and I am having a weird issue with the frequency selectors. Everything above 100X

Hello All, New member here. I have a Type 1L10 Spectrum Analyzer plug-in that I've owned for several years. It's nice and clean, however the previous owner removed some parts for some reason. It was m

Hi folks, I have been trying to read the content of the Dallas DS1486 of my TDS684A before trying to desolder it. The battery is really low since it is necessary to run SPC calibration every time I tu

Hi Jon, I always stick a repaired/recapped power supply on a dummy load and check its voltages on the bench before I put it into a scope. Saves a lot of frustration, and damage. If you know the supply

Hi, I have a Tek 2235 serial (no letter) 203946 with a long persistence orange screen. On the front it states "opt 76", which I cannot find in manuals or catalogues. Could someone point me to more inf

Hi guys Happy New Year to all. I'm new in the group. I've bought a working (supposed to) Tek 485 for a few euros here in France : received it and tried it for ~10mn. I powered it off and cannot power

Hi, Since I’ve had this scope (2235), it’s one that I enjoy using because it’s fairly light in comparison to my other ones; the form factor is convenient. And it gets the job done for my needs. Howeve

Hey folks, Wondering if there is someone here who is a readout system whisperer. I have me a 7904 that wasn't working when I got it. It's a rather interesting one, with all available options equipped.

Hello all. My name is Joel B Walker. I have been interested in electronics all my life having grown up in my father's shop. I am a self employed repair tech, working on anything electronic plus any ty

I'm in the process of finishing up the recapping of my 2235A, it started out noticing the condition of the RIFA caps in the line filter and the main board along with the IEC inlet filter, and kind of

Hello, I have been lucky to find a P6042 current probe with a fully functional coil and hall sensor. The only band thing is that the cable to the sensor was broken in at least 7 places. It is repaired

Hi, recently I have become aware of this group and the interesting topics discussed here. For more than 40 years I have been fixing almost anything as a hobby - from 1930s radios and all kind of TV se

Harvey White wrote on 1/24/2021 8:00 PM: > Use a 74LS90, which is a divide by 2, and a separate divide by 10. <snip> Hello-- IIRC, the 74LS90 has divide-by-2 and divide-by 5 sections. If you need a di

Hi folks, Is there a way to tell (for example by serial number) which scopes had which version of the A5 board? I am aware of 3 variants 1) leaky surface mount electrolytics 2) through hole electrolyt

I've been trolling the "pile of miscellaneous parts" auctions/sales on eBay in an attempt to cheaply bulk up my supply of consumable probe accessories, and I hit a few jackpots, but now I need some he

Hello all. I have a Tektronix 475 that I have been working on. I've got it repaired electrically so now comes the mechanical repair. It has 2 good volts per div knobs but the silkscreend values have b

are the posting getting fewer or is my email on getting them.

Is Shawn (KJ7MX) on here? I'm asking in reference to the eBay listing for printings of the 2236 manual: https://www.ebay.com/itm/Tektronix-2236-Instruction-Manual-Comb-Bound-Protective-Plastic-Covers-

Hi, I recently adquire this unit I had a diplexder and WG so to be able to increase the 21GHz frequency but this unit does not go over the 21GHz limit. It does not appear to have any options but it do

Hello all! I've got a 7000 Series Standardization Plug-In 067-0587-02 that is acting strange. Sometimes the Gain setting on the TEST switch will show a compressed set of lines instead of the correct 1