I believe if you run "CYCLE ERROR CLEAR", which is "Exerciser 3" on a 2465, you'll clear the error and go directly to operating mode on startup in the future.

I had a precision resistor in my 485 that measured spot-on, but then beat Ohms law by some 10% under actual operating conditions. Seems it came to identify as a VDR.

I don't think that's how this is supposed to work. I think the way this works is that in balance, the BE junction of Q1306 effectively pegs the base to one BE junction above ground, e.g. 0.6V as noted

I seem to remember having to pull the power supply out and separate the boards, no big deal. This was a number of years ago, and I remember having trouble getting the switch de-soldered. Most likely I

I had an intermittent power switch on my 2465. I seem to remember this manifested roughly as OP describes, e.g. sometimes it would start, and sometimes it wouldn't. Got worse over time. I remember the

Þann mið., 30. des. 2020 kl. 17:53 skrifaði Chuck Harris <cfharris@... Hey Chuck, Unfortunately that doesn’t help OP, as an impeller will pull the same way whichever direction the motor turns. I

Looks like it sold pretty quickly: https://www.ebay.com/itm/153970694486.

And this is a reasonable intensity? I would suspect the intensity pot, or the MUX in the potentiometer readback. The pot itself is easy enough to test, just find the pot signal ahead of the MUX on the

Good catch! Shortly after I joined the group, someone here admonished me that when you hear hooves, think horses before zebras. For me this means e.g. to look at mechanical components before electroni

Hey Denis, Happy Turkey day and my best to Marian, I hope she gets her surgery soon. My daughter's skating coach has had both hips replaced and she's back on the ice at 75 years young. She tells us it

Hey Steve, I didn't read the code in detail, but it looks to me that the firmware dump and write is done with what looks like binary reads and writes. From what I understand or remember, the scope has

Hey Roger, I tried cleaning the edge connector, but that didn't seem to help. So took the head apart and gave the two pots as well as the board-to-board connectors some D5 and I gave the pots each a w

llaassllaaass@...> wrote: It looks like the web interface on groups.io garbles anything that looks like an email address. I don't have trouble with this in email delivery, see https://groups.io/

Hey again, maybe this helps: https://web.archive.org/web/20191222171302/https://stackframe.org/tekfwtool/ ? Siggi

Hey Steve, there's a thread about this on EEVBlog: https://www.eevblog.com/forum/testgear/tds-744a-(-friends)-firmware-reverse-engineering/50/. Sadly it looks like the github repository linked is no m

PayPal really doesn't make it easy to go through this, presumably because they don't like exposing their fees to end users. For me the choices were "Sending to a friend", vs "Paying for an item or ser

wrote: I just had a piece of SMA-terminated coax from the S-52 to the S-4. I'll get some pics of the traces in the morn'. The noise doesn't manifest as a thick trace but rather as the trace bouncing u

Hey y'all, I just scored a Model 3 cart for my 7834 locally. After relocating the scope and the modules I have from the floor, I played a little bit with my 7S12. Initially I had my S-52 in there with

Hey Roger, I guess that tears it. There has to be something wrong with either the DAC, its data inputs, the load resistors or the MUXes. Not a bad bet that the DAC's gone - alas. I really don't think

Þann lau., 14. nóv. 2020 kl. 05:32 skrifaði Rogerio O <rodd414@...>: The only damage that could happen is CRT burn. If the beam intensity is still under control or low/none, you’re fine. If the