I'm trying to fix a DM501 that I damaged by plugging it into a faulty backplane. One of the display digits is stuck on and I think that I've narrowed the cause down to one of two transistors that driv

I purchased one of the TM500 extenders from an eBay seller for $70. It is still in the mail but looks really good on the listing. Does anybody here know about these? Thanks.

Dear Sirs, I got hold of a 7L13 spectrum analyzer in a 7603 mainframe and I have two questions to ask you, first from the manual the tuning knob can be pushed or pulled to change the tuning speed, but

I noticed we had a bunch of these new military HV multiplier assemblies, They may prove useful for fixing one that has tanked in your scope. the part number is SCMA 10139, and they are at the end of t

Sorry if this has already been mentioned, but Stan's daughter is trying to clear out his collection by February 27. No connection except I read about it on Facebook: https://www.facebook.com/groups/ol

Bonjour a tous, We have two fine SC502 scopes, scratchy controls V position, CH1/2 VAR, focus, Trig lev. Many TEK Instruments of the era have sealed square modular controls, the Bourns MOD POTs. The B

TekScope and TEK500 Group members who asked to join the group purchase of circuit board sets for Jared Cabot's TM500 tester should be pleased to learn I have packaged and today shipped from Anaheim, C

Following this thread, I remembered that I had some odd BNC terminators in my accessory drawer. I just fished them out, and they are ELCOM FT-90, BNC (m-f) terminators and measure between 91.2 and 93

I have a PG502 that I am fixing up, and it lost the output high level knob (366-1514-00). I have been unable to find a replacement knob online, so I am going to try to construct a replacement, but I n

I just picked this up today. It's a horizontal layout with the CRT on the left is what appears to be a separate chassis but bolted to the RH chassis. The RH chassis has 4 (FOUR) expansion slots. Two a

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https://www.ebay.co.uk/itm/Vintage-Oscillascope-Tektronix-Type-545A-Collectable-Project-Hobby-Untested-/274685077758 I've no connection to the seller. Regards, John

I believe there was some sort of relationship between Tektronix and Rohde & Schwarz, so maybe I'm not too far off topic.�� The discussion of the transformers in the 549 and my experiences with an

- <rrrr6789@...> updated the album CooperVision scope: Bought is a surplus store and don't know anything about. The plugins do fit a TM 503 mainframe and I thought that is was a modified Series 5000 s

- <rrrr6789@...> added the album CooperVision scope: Bought is a surplus store and don't know anything about. The scope is a Tektronix 608 monitor and the chassis has two Tektronix stickers on the bac

Hi all, I’ve got a 2236 that’s been working for years other than a broken VFD display. I just found a replacement VFD and installed it and now have just a tick at startup. The scope does about 5-6 tic

Hello everybody, I have a problem of probe identify on a 7A16A plug-in inserted on a 7603 mainframe, in X1 mode it works, but in X10 mode the indications on the ranges from 5 mV to 500 mV are identica

Just a brief comment on TM500 module faceplates, especially as it relates to test plug ins. 1. the layered plastic/metal front panel is not really useful for most locally made items. Its purpose for T

Regarding the TM500 board connectors, there actually is a small chamfer or edge break on these edge finger connectors and it is important that it be present. You might need a magnifying glass to see t

I was about to make the backing plate today and suddenly realized that I needed the plastic surround/trim. (I had forgotten about it!) Last fall I was working on a 3D printed faceplate for one of the