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The serial number on mine is >160000. As far as I know, it doesn't have other ground contacts like the ones you mention. My 7A26s have leaf springs that are mounted to the PC boards and contact the

These ground spring contacts seem to have an odd way of not showing up in exploded parts diagrams. For instance, my 7L14 has a spring washer that presses against the shouldered hex nut and the

Sorry for opening this rather old topic. I have the opportunity to buy a CSA803A with an E5322 error code. I read different reports on this error and the loss of calibration parameters. Can they be

Well that might be a plausible reason. I just don't know why it isn't in the manual or why no one seems to have seen this before. Thanks, Barry - N4BUQ

BTW I wasn't planning on any pictures. I didn't think to take any shots of the teardown or other intermediate steps. You would hardly notice any internal difference from the real thing except for the

Mayber PEG... because it has badness...but, more likely VG (vegetable glycerin) or PG (propylene glycol) ... because it has less badness. AFAIK, most of the vaping fluid is these 'carriers' or

The main function of these washers and springs may be electrical, rather than mechanical: to ensure that the VOLTS/DIV shaft and knob aluminum core are kept grounded at all times. There should be a

You are right, I am a donkey… Not only works, but quite well, even if it reaches only 500 MHz (-3 dB), but probably it should be calibrated.

It sounds like you're describing knobs that go on a 400-series scope (465, 465b, etc.). The 7A18 is a plugin for a 7000-series scope where the numbers are printed on the front plate and the knobs are

Bonjour à tous! Just received a 7904A, little used in decades. So far fine CRT, all works but scratchy CRT controls and a few switches. Will CLA them. Seeking advice and tips on typical weak

I worked for a while at a vintage sound equipment boutique, and can attest that weed leaves a very nasty residue. Spray cleaners containing ammonia are best, and are very effective in getting rid of

I do know that pot makes a mess of tape transports..leaves a sticky mess everywhere so that vape stuff cannot be much better.....I found out after a friend passed and I was gifted some tape

I retired years ago, used to repair Tek and HP stuff. Back then I might have had the parts you need, but that was then. If you have to cement the part, I think it was a gray knob with a clear skirt

Thanks, I did have that in mind. I don't think I have anything to worry about with my 555. It came from an estate sale and stunk so bad I had to keep it outside for a month. No question as to why the

My DSA602A shut off by itself and clicks with power light flashes / will not start. If I disconnect A24 from power the DSA shows signs of life and appears to boot normally. Before I go doing

With the standard 7603 type vented plastic cover over the heat sink, I estimate the case of the hottest TO-3 transistor (center top) reaches about 75 deg C rise over ambient, or about 115 C with 40 C

Touch Def Wfm in the top right corner of the display and select compartment (L, C or R). /H?kan

The springs/washers don't press against the front panel but against the front the frame. The springs resemble the type where a plugin's board connects to other boards via pins/sockets and the spring

Be careful with what ever you use as it will transfer to or interact with the instrument (e.g. paint, trim bits, knobs, etc.) that you are covering.

Reminds me of my A?C cover. I always heat it up in the direct sun before trying to put it on or fold it up. Helps some.