flippityflop Posted November 9, 2014 Report Share Posted November 9, 2014 so i got this multimeter (the only one i have now), which i purchased about 8 years ago or so. i think WAS pretty good quality back then.throughout the years, every now and then, i would mismatch the probes to the multimeter function (volts, current, resistance). sometimes, i would first be measuring voltage, then current afterwards (properly switching the selector to the correct function), but leaving the red probe at voltage/resistance socket. ok... this could be harmless. but sometimes i would accidentally leave the red probe on the Amps socket when i would be measuring the voltage or resistance (with voltage being in the range of 16-32V)when i use it, *almost* everything seems to work fine. all the readings of the functions are consistent to each other (ohm's law). i have reliable power supplies and when i read the voltage using the multimeter, it confirms it. though it is about 3-5% higher than what it used to read before. i'm fine with that... but when i use the resistance function at ranges 200kΩ and up, even if no probes are attached, it shows a constant resistance of 36.6KΩ; going all for the 200kΩ, 2MΩ and 20MΩ ranges.i thought there could be just a shorted/busted resistor somewhere but visual inspection suggest it doesn't.do i need to replace my multimeter? Quote Link to comment Share on other sites More sharing options...
Hero999 Posted November 9, 2014 Report Share Posted November 9, 2014 Yes you probably need a new meter and make sure you buy a reputable brand and not something cheap, so it lasts longer. Quote Link to comment Share on other sites More sharing options...
flippityflop Posted November 10, 2014 Author Report Share Posted November 10, 2014 how do i make sure that the multimeter i buy have safeguards against mismatching the probes again?? Quote Link to comment Share on other sites More sharing options...
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