Mark, Thanks. I have to drive 150 miles round trip to access IEEE papers. I'll be collecting lots of NLTL papers the next time I go to Little Rock. At the moment I'm working on deriving the

I would start by pulling, cleaning and re-seating U900. Second perhaps swap U900 and U700. If that doesn't help, you might be able to narrow this down a bit by experimenting with various A/B sweep

Hmm... I've not heard of the tidbits before, although I use IEEEXplore fairly often at work.   I will try it tonight from a real computer.  Not so much fun trying to read serious articles on a

You could try swapping the A and B sweep generator hybrids U700 and U900, they are identical part numbers. There should be some recommendations here about cleaning the contacts (carefully!) if the

I wrote a "tidbit" on NLTL patents for Microwave Magazine. You can find it here: https://ieeexplore.ieee.org/document/7484899 There's quite a bit of history in NLTLs, so one can spend

It’s not. The proper lights come on suggesting the scope is trying to run the B sweep, but it isn’t running.

I acquired a non-working 7623A a few months ago which included a few faults in the storage control board with four 74xx ICs having failed, two monostables and two logic ICs. This meant that I

Is it possible the switch isn't operating when you pull the knob out?  There is a plastic piece between the knob and the switch that can be broken.

Does anyone have one of these they can pop the cover off and take a photo or two, or have the physical pinout of the CRT so I can match up the wires?

Okay following the video of w2aew (https://www.youtube.com/watch?v=54roz8IUoVI), I'm now a bit more confident I'm not goofing something up. Pulling the SEC/DIV knob doesn't result in an intensified

Hey All, I've managed to find some time to play with my 2467B and have been trying to untangle whether the non-working CTT option (CT TEST 86 FAIL 02) has broken the B sweep or if the B sweep itself

Thank you!! I just bought the user manual, so I'll be scanning it when it arrives. There is a paper copy of the service manual on eBay for $35 which I will buy if the seller will verify it is the

Seem to be a hard one to find. I scanned mine and you can find it here for some time: www.hakanh.com/dl/temp/11801_Service.pdf It is OCR'ed and bookmarked. Feel free to upload it to TekWiki. /Håkan

Thanks for the replies. I tested the batteries and found that the memory board one was reading almost 0V! Have just replaced, but unfortunately to no avail - still same error. Whilst doing this I

The fast storage mode had almost no contrast, even straight from the factory. It is normal for them to sport a comfortably bright background, with a ever so slightly brighter trace. The difference

from Tim P (UK) I have three 5000-series storage 'scopes where the store mode seems weak and lacking 'bite' . I have done the 'fade positive' thing as recommended in the manual, to clean out the dead

Also, forgot to mention that there are testpoints and status LEDs on the display and digitizer IO board that can help to narrow down what may be the issue on either of these boards. Table 3-7 and 3-8

Pretty amazing machine for it's time. Been toying around with the idea of getting a Rigol for every day use, but I've not been able to bring myself to the point of dissing my DSA :) The service

Have you checked the memory backup batteries?

A big thanks, that certainly answers the loops in the transistor trace in which there is nothing actually wrong with the instrument or transistor Now that just leaves me with the spiking interference