Dear All, After fixing the A5 board of the scope which was damaged due to capacitor leakage I have started to try to calibrate the scope. I managed to adjust DAC REF without any issues and moved to CA

Rogerio O added the album Tek 2465BCT CAL01 weird behavior.: This are photos and movies of what I get when trying to execute CAL01 routine.

All- I am doing a bit of fall cleaning and have several hundred (10 lbs.) vintage Tek ceramic terminal strips and plastic inserts. I only need a few of them. The rest of the terminals need to go to a

Hi all. I'm currently restoring my DM502 Digital Multimeter and am looking for a few parts. Specifically, I need the 'dB' and 'INT' push button caps (with writing in good condition) and hopefully mayb

Hi folks, I was working on a 7T11 --> 7T11A mod for my recently acquired 7854. Got some intelligible traces @ 100kHz (albeit dotty) on the 7854 in SCOPE mode. However after trying these and a 7A24/7b9

While pulling apart this 465 parts scope I tried removing the pushrods from the Horizontal Display switch on the A7 board. Working on the bottom "B DLY'D" pushrod the push button came out of the switc

Have been searching but have not found the latest version of Firmware for TDS540A. Does anyone have an idea? Thank You Luca

tekscopegroup@... wrote on 11/30/2020 12:28 PM: > I recall walking Canal Street in lower Manhattan in 1976 during a vacation trip with my parents. <snip> Hello-- Sometime in the early 1960 , my roomma

The following photos have been uploaded to the 70ies electronics... electromechanical computer ? album of the TekScopes@groups.io group. P1200918 (07.07.2019 - 12h43).jpg P1200919 (07.07.2019 - 12h44)

Harvey White wrote... "See if you can find the SF novel "Venus Equilateral" by George O. Smith. Pay attention to the electronics and computing part if you would, which shows (amongst other things) mec

These are likely to be leaky from C to E as a diode while checking normal as an NPN. An hfe meter will show way off hfe on the leaky ones. If they have round leads (tarnished above the socket), they a

Hello, I live about 2 miles from Fair radio. I know the owner Phil, not a close friend though. I am not sure what will happen when he retires.... I do not know if the show room is open to the public a

All: I am working on a 468 Scope. All voltages are within parameters both the main and digital power supply sections. I have tested the analog section, bypassing the Digital section. Analog seems to w

Dear all, I have read somewhere on this forum what is necessary to do in order to store the calibration constants without finishing all the calibration steps. However I have spent more that an hour se

The following photos have been uploaded to the 70ies electronics... electromechanical computer ? album of the TekScopes@groups.io group. P1330005 (29.11.2020 - 21h09).jpg P1330006 (29.11.2020 - 21h10)

Among my menagerie is a recently acquired 2215A which I had to perform minor repair work on, but otherwise seems to be in fine condition. I would like to do some adjustment on channel 1, whose trace j

I'm still waiting for one component to replace the blown transistors in my sick 475A, so I decided to investigate the similarities/differences between the 475A and a 475 parts scope. The first thing I

Hello Groupe I have this 492A spectrum analyzer and I have found that the input attenuator (0-60DB) i defect.... is it still possible to get spare parts for this attenuator or is there a better way to

Just saw this on ebay in the UK : https://www.ebay.co.uk/itm/Tektronix-Type-545-Oscilloscope-Vintage-Antique-Collectors/353290325095?hash=item5241be8c67:g:-GYAAOSwBPZfvDOx Looks like it's been stored

My apologies. I sure my absence the past 4 days has caused some concern. I have been sick. Tuesday morning I was in bed with what I guess was a stomach flu. The next two days alternated between bed re