Thank you.Do you mean it was on a current range, but connected to a voltage source?
Does it read correctly on any range?
If you're very, very lucky.Probably a blown fuse.
Not that.Probably a blown fuse.
From your description, it is broken. Have you opened it?Not that.
I replaced the battery, it can measure but the number is wrong, the V12 by another meter was read by it for 10.85, and the 5.05 for 4.57, around 90%, why?
Auto range?! Ugh, cursed invention, always flickering back and forth between ranges rather than giving a reading!It's a good time to buy a new auto-ranging one.
I didn't open it.From your description, it is broken. Have you opened it?
Thank you ,This meter shares the input across V/Ω/mA, thus it is an easy mistake to do (one more reason to have meters with fully separate input jacks, but that is subject for another discussion).
I would thoroughly inspect its internals and compare to one of the multiple reviews around on the internet.
View attachment 172673
I find very interesting the measurements indicate only a fraction of the regular voltage - this usually indicates that a thermistor is still warm due to the abuse and it would take only a few minutes for it to get back to its normal resistance. At any rate, I would suspect PTC1 would be the most probable culprit as several ranges are affected (and this seems to be the common element just before the ADC).
I find it hard to believe that one of the input protection clamping diodes/transistors was fried due to the excessive voltage across the shunt resistor. For that to have happened, the fuse would certainly be blown well before that. Although it doesn't hurt to check D3 and D4.
That won't help when you make the mistake the OP made.It's a good time to buy a new auto-ranging one.
I agree with your sentiment. Autorange is more bother than it's worth.Auto range?! Ugh, cursed invention, always flickering back and forth between ranges rather than giving a reading!
Nope. When I studied electronics, analog meters were far more common. We learned to set the range for what we expected to measure.Don't you get tired of turning that dial to figure out whether you have an open or you're out of range?
Me too I have a bunch of analog ones... My first auto-ranging cured that. Now I can't imagine going back to guessing and turning that dial... There are a few areas where a moving coil display is handy... it's good for representing RMS for AC signals... It's not as fast but a nice representation of information... Perhaps Digital is too fast and detailed to show such information without graphical display. I believe my first MM was from radio shack or Sears along with the Heathkits and stuff like that ...Nope. When I studied electronics, analog meters were far more common. We learned to set the range for what we expected to measure.
I still have my first analog meter (an RCA). I have a couple cheap Radio Shack analog meters that I keep in cars so I don't need to worry about having good batteries to measure battery voltage.Me too I have a bunch of analog ones...
Inattention to detail can result in one receiving a Darwin Award. It's always preferable for the award to be bestowed upon individuals before they've had a chance to procreate.But the fool did not realize that the leads were plugged in to the ten amp current jacks. He put the probes across 480 volts AC, fused at 60 amps.
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by Jeff Child
by Jeff Child
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