I am having a similar problem with another 2C42. There is an offset error in DC volts and ohms scale that can't be zeroed and this error is added to the measurement. Is there any fix?
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amy replied at 2019-5-18 13:21
Sir, is your 2C42 purchased recently?
Please shorten the two pens. Test DC voltage, will the value ...
Yes, it is very recent Rose sent me them 2 weeks ago. The problem I'm facing with my units is the same as reported by colin, shorting the leads will not zero the devices.
I sent you 2 emails already, let me know if you need more details.
Post time 2019-5-17 10:34:34