Vintage Lab Gear - Simpson 467 Digital Multimeter teardown, minor repair and testing - STB66
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- Опубліковано 11 сер 2017
- A Simpson 467 Digital Multimeter from the mid-1980s. We tear it down, do a couple simple repairs and do some basic tests. It's surprising accurate for its age. This would have been a great meter to have in the 80s or 90s and would still make a decent meter for someone just starting out exploring electronics.
I bought a new Simpson 463 which is in the same series as the 467 in 1980 or 81. I still have it and it still works great. Simpson built a quality product.
I just nought the Simpson 461 model i will receive it in a couple of days i hope it does not have any issues.
Good video very interesting and informative. 👍
I have that exact meter, just badged as a "Xerox 600T 1616" with "made by Simpson Electric Company" on the back. Still works just fine, and if it wasn't such a massive battery hog I'd still use it as my daily driver.
PS: they have dark red stamped-on datecodes on the back cover outside and inside with a YYMM datecode. Mine is from week 44, 1985 (so older than I am by a couple years)
Good overview on this meter. I would be surprised if the leads could not be replaced with ones meant for the Simpson 260 which also uses the reversed shielded plugs/jacks.
From the schematic it looks like the two big chips drive separate parts of the display. One controls the digits and mode indicators, the other one controls the bar graph portion (one pin on the chip for each bar graph mark)
Just picked one up off eBay for pretty cheap. I like repairing vintage test gear anyway. Although I'm more comfortable with tubes, this is interesting too. Thinking to mod mine to run off a 9V transformer wall wart, and maybe playing with LED lighting the display.
i watch you all the way thru, I figured out that we got something on common good lock
Glad you enjoyed the video. :)
I received one for free, the only thing missing are the connectors to connect the probes to the multimeter itself. Where can i get them and what is the type of connector called?
hello friend how are you I congratulate you on your video I also have a simpsons 467 but has a small problem in the scale of DC measurement on the scale of 2V the screen remains at 0.07 making short between the tips I measure a voltage measures well no problem other scales remains in 0.00 i read the service manual and the equipment is calibrated that can be?
This sounds like it could still be calibration. The error looks to be about 3.5% of full scale (0.07 / 2.00). I don't recall the specs but this does seem a little high. For my unit I had to do a lot of cleaning of the push button switches using deoxit. I lost the video I shot for this. I would spray one switch then depress / release the switch multiple times. Many of the switches would get stuck depressed. I doubt cleaning the switches on your meter would help the 0.07 issue.
this is my video of the problem ua-cam.com/video/G__NVJF9JA8/v-deo.html
@@ShadowTronBlog Excellent work on bringing back to life the Simpson multimeter and the broken lead, you did some great surgery on the lead!
I don't recall the details in this meter however there is often precision divider resistors that get switched in / out depending on the scale. Perhaps one of these for the 2V rail is shorted, possible from someone applying too high a voltage.
Another possibility is an issue with the rotary switch. Perhaps a solder ball or damage for the 2V range. The internals of the switch are really delicate should you decide to take it apart. Bending one of the contacts in that switch would most likely result in an unrepairable switch.
Add plastic pull tie to lead.