Thx for that advice: Here is my plan : Topic: Replacing/upgrading the LTC 7P Lithium battery backup for the 2465A STATIC RAM. Replacement Battery: http://www.newark.com/jsp/search/productdetail.jsp?sk

Hello, I joined this group after purchasing one of these scopes which arrived defective. Originally, the low voltage power supply was ok but the high voltage supply had a problem where the fuse was bl

Please pardon the OT but I don't know where else to turn except to groups like this one for some things. I have an older Powerstat 116 that I've refurbished (mostly cosmetic but have rewired it as wel

I'm ready to part out a 5440 mainframe to clear it out of my workspace. Everett, WA 98203 It powers up, but I don't have an amplifier to test anything. Based on the state of other gear I acquired in t

Hi all, I've recently purchased a 7A16A, working, looks new, S/N B138015. Probably the previous owner has tried to calibrate the HF response in a badly manner: risetime was 3 ns with very rounded fron

Starting a new thread as although this is on the same scope, this is a different question and I want to avoid another long thread. I looked in the 455 service manual and in the Tektronix 'Troubleshoot

I just finished replacing the Battery, rebuilding the Power Supply, broken Scale illumination Pot on a 2465A for one of my nephews. It had an SRAM Failure that I had to replace. The Failure was intern

I did a quick search and found some cryptic comments in one or two instances of someone using a particular glue or epoxy to repair the above. Alas, the correspondent made no mention what he was using,

I have a Curve Tracer Adaptor, P/N 013-0128-00, for a 5CT1N/7CT1N plugin and a previous owner removed the larger of the two sockets (for a TO-5?). From the documentation I have, that socket is P/N 027

Dear all, Since I was unable to calibrate this unit and it was showing erratic behavior, I removed the main board for a closer inspection. After removing the cam of the Step/Offset switch to clean the

Very clean TVC501 manual. Pic available. $10 plus shipping from Everett, WA. Check or PP FF. Cheers, Grant KB7WSD

Rogerio O <rodd414@...> added the album Tel 577 Main board repair: Damaged board contact in cam switch --- The following photos have been uploaded to the Tel 577 Main board repair ( https://groups.io/

Olá, After getting the LV rails in order on this old scope, there is no vertical deflection. The trace sweeps horizontally just fine. Looking in the service manual, and following the troubleshooting c

I have a 465 that I have already done some maintenance on and that I thought was fine. Instead, when it came to using it for real, I realized that the two tracks suddenly disappear after about 3 minut

I have a 7B80 which doesn't work in external triggering mode and I discovered one of a matched pair of JFETs in it (Q22A/B) decided it liked being a diode instead of a transistor. As the subject indic

I completely forgot to mention that the covers for the pairs of transistors in the attenuators, per the item number in the subject line, have rotted in my unit. What have you used to replace them? Has

Hope this is OK to blow my horn a little... A few weeks ago posted some vids on reviewing the 545 and working 531 I have in my collection of test equipment stuff. New to posting videos. Working 531: h

Hi Tek Group, I have a Tek 2465 that has power supply issues. I have followed the instructions from the Tek Service Manual, and found that the INVERTER DRIVE portion of the inverter board is problemat

Needs a loving home. Never abused likely never used. Includes the return card so you can 'drop it in the mail' to get on the Tek mail list. Has a couple dozen yellow change pages in the back. The only

Hi I fixed my 2465 over a number of years, replacing the ROMs etc and fighting my way through the CAL process despite not having the best kit. My question relates to the frequency measurement readout.