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Old 10-17-2021, 06:26 PM   #7
Badcaps Veteran
Join Date: Apr 2010
City & State: Canada
Posts: 9,200
Default Re: Radio Shack 2200813 29 range DVM

Originally Posted by Schoenradt View Post
I don't see any way to ero the ohms out as the meter reads about 46.7 ohms when leads are shorted.
When you have an offset like that with the probes shorted, I would try the simple things first.

1. Try a fresh batteries first. Some meters give incorrect readings before they show a low battery indicator (if they even have one).

2. Give the entire PCB a good IPA clean with a clean toothbrush and let it dry overnight. Any unseen dirt, debris to the naked eye can affect the readings and give non zero ohms readings when the probes are shorted.
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Last edited by retiredcaps; 10-17-2021 at 06:32 PM..
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