Hello all: I have a TEK 7L5 with tracking OPT 25 in Paris. I need to test it out, but I have no mainframe...Anyone in or near Paris that has of know of a working 7000 eg 7603, 7704? We could RDV meet

Hi all- just acquired a 2335 ( cute little bugger, excellent cosmetics), no raster, all voltages good( no ripple), except problem on the a15 board Z axis, near TP130 voltage was wrong, problem found-

I've been pondering asking this question for I know this is likely to be a "new to curve tracing" question but here goes. For reference, pictures here: https://groups.io/g/TekScopes/album?id=252850 Fo

A few 475's and 475A's have landed on the bench of healing to see if I can breath life in to them again. I am starting with a unit that was owned by IBM and has the DM44 on the top. cosmetically the u

I noticed my 547's square wave response had deteriorated. There was a large long-duration overshoot, risetime had slowed from 7ns to 10ns, and bandwidth was 35MHz instead of 50MHz. There was no change

I came across these 11A32s. Are they pre-production? https://groups.io/g/TekScopes/album?id=275323

I have a 5440 in my collection that happens to be an "option 01" scope. That is it doesn't have CRT readout. The controls for readout are on the front panel. However, the readout circuit board and som

On 2022-05-21 4:25 p.m., toby@... wrote: > Hi all > > I have a loose 604 crt so I thought I'd ask on the offchance that > someone has a 604 parts unit - hopefully lacking little more than the > crt, b

I just acquired a Tek 3001GPX with all the goodies (keyboard, three P6490 acquisition probes, and 2 extra probe lead assemblies for the P6490s). It powers on, passes all it's self tests, says that it

Hi all, I have come across a Tektronix/Sony CM360 Oscilloscope Checker and was trying to find any manuals or information on this equipment. Unfortunately, the internet seems a bit lacking in any real

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

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

Hi all, Picked up a Tek 7313 from a local lad via Facebook. He didn't actually know what it was but thought it looked cool, bless him. Anyway, it does power up, however hums quite loudly and doesn't f

Hi all I have a loose 604 crt so I thought I'd ask on the offchance that someone has a 604 parts unit - hopefully lacking little more than the crt, but ideally including the power transformer and supp

The following photos have been uploaded to the 7A16A step response (with 7854) ( https://groups.io/g/TekScopes/album?id=262075 ) album of the TekScopes@groups.io group. * pin14_U350_removed.jpg ( http

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

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

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

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