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There are several software programs for generating meter faces, paid or free. Two are: https://meterbuilder.com/mb1/custom-meter-scales.html

I have to redraw the scale for mine, it's faded beyond readability. If those scales weren't individual to the meter the redrawn scale might be of some use to others. Not happening anytime soon

Tektronix 106 Square Wave Generators for sale on eBay new surplus in Box. Preferred Air Parts have three of these left out of five. I just purchased one. If you don’t have one you need one! I will

Richard, many thanks glad I could help. Ed, fine mod, I will do the same on my 130 LC. By the way are the meter scales hand calibrated? Plan à similaire mod for à Tek 191 constant amplitude

One of my 7904s just crapped out with HV arcing inside the PS unit - very loud and obvious. I had just fixed it (it had other problems not HV) back in November, and I'm convinced the failure was due

I agree - no line filter is needed. I'd say also that no extra trim plate is needed either unless the metalwork has been messed up. I changed my 130s to IEC recently by filing out the hole periphery

James, The neon, DB1219, should stay lit for a bit of time after turning the unit off. By going off fast, that sure sounds like your main filters are bad. In these in my 7000 series, I used Nichicon

Hi Gerard, Does the CSA803A have a color display or is it BW? Could you give a refdes for the parts in question or link to a photo somewhere so I can find their location? PS: I would suggest the

The neon functioning is acting normal for operation of the PSU. The service manual calls it out as a "safe handling" indicator IE don’t handle the supply while it is still flashing. The supply has

Hi all and thanks for the replies and help. I'm pretty sure it's in the PSU but I will reconnect it all (again), fire it up, and try the trick with the microphone in a plastic tube. Trouble is, I'm

Hi Wolfgang, Regarding the 148-0063-00, I don't know what type of relay you're thinking of using but that relay is designed to operate such that when the polarity is one way, one set of contacts are

Clew...scope, bought in filthy condition.... Crackling... Almost certainly the HV ultor 21 KV at X7 multi On our 7904A, exactly same problem. Doubtful if LV PS or bus caps. We have experience in

Take a long plastic tube, at least 1 foot.? You could use cardboard, but plumbing material is fine.? Stuff a microphone down one end and seal it in with tape.? Run the microphone to an amplifier.?

Are you sure it's in the PSU? Does it change if you bump the HV lead? I've had a tic from my 7704A that sounds like a static crackle if I move the HV lead with a nonconductive tool. Have not been

Super, thanks Jon.

Thanks Zen, much appreciated. I checked the main caps fairly cursorily for capacitance, which was textbook value, but didn't check them at proper operating voltage for issues. I will certainly do so

I have a 7904A with similar issues on the bench also with a VERY early serial number 507. In my case I have confirmed that there is issues with the main bulk filters they are arcing internally. 200

After seeing some interest, I decided to populate at least 1 panel with all SMT components. This might also be the way selling them to you. This enables me to paste and reflow solder a whole panel

Happy New Year everyone! I have a 7904 s/n 215841. I got it at an auction in the UK where I live, where there don't seem to be many of this series available, and it was FILTHY when I picked it up.

Dear all, The screen of my CSA803A developed a problem. It showes flyback lines, low intensity and I could not get it calibrated properly. The size of the picture, focus and convergence are