Simpson 260 VOM Troubleshoot And Repair - Part 2

Follow along as Erik troubleshoots and tests this vintage Simpson 260 - Series 4 VOM with a problem on the DC volt ranges.
Part 1 video • Simpson 260 VOM Troubl...
#testequipment #electronicsrepair #learnelectronics

[@migsvensurfing6310]

Nice old meter. Love them.

[@grhinson]

Always good stuff

[@knoxpruett1889]

Also, if the ohms scales will not stay zeroed or the needle moves when you tap the side of the meter case, replace the big fuse. It has an intermittent connection. This happened to me. I know it is odd, but it really can happen. Save yourself a lot of trouble shooting time!

[@EriksElectronicsWorkbench]

Yes I had a similar problem in my Sencore capacitor tester where the fuse went intermittent. Fuse looked ok but had no continuity because the end cap connection broke.

[@RetroCaptain]

Im willing to bet a few shops are relying on way out of calibration meters of this age.
I used one in a professional setting many years ago but the model was then seven years old or so. The one I just bought is an SP in scratch free condition

[@dkeithcollins]

Great Video! Thanks for sharing your knowledge!
Is that fuse that is mounted across the selector switch factory or an after-market repair/modification?

[@EriksElectronicsWorkbench]

Thanks for watching! The fuse is factory installed in that position across the switch.

[@levent8208]

Good job Erik !
Imagine measuring 4000 volts with the meter, who does that ?
Do you know where these meters are still professionally used ? As someone mentioned in the previous video, they are still available on the market, made where !

[@EriksElectronicsWorkbench]

Simpson Electric still manufactures them in the USA. Their website is simpsonelectric.com/products/test-equipment/vom-multimeters/ The new production meters top out at 1000 volts AC/DC. That is standard on modern meters and a high voltage probe is needed for over 1000 volts. Regular test probes are never safe over 1000 volts! Analog multimeters are very useful on noisy AC measurements that make digital meters unreadable from gibberish number displays, and for measuring changing voltages that make digital number displays hard to track. The analog meter can give a better understand on the rate of change. These meters do not require battery power, except for ohms, so that can add to reliability.

[@levent8208]

@@EriksElectronicsWorkbench Thanks for the info, it's really interesting, I didn't know the company was still in business ! I still use analog meters and my favorite it my electronic Simpson really similar to the 260-6XLM on the Simpson's Web site, that I bought used in the 70's, you can inverse polarity no problem and the meter is rather accurate.