I'm wondering if I have a defective unit. When I turn in on to read voltage, the digital read out starts displaying numbers without it being connecte
1639954
When checking voltage, my Klein MM1000 will display 0.000 when it is not connected. No randomness or glitchy behavior. If I shake the leads, there is some activity but immediately returns to 0.000Edit: after leaving it on for a minute or two. It is acting like Ricks comment. Activity in the 100's and 1000's digits. I do not think it is broken.
1639955
If you're measuring millivolts, it's likely you're just measuring static charge that has accumulated on the leads or connections. If you connect the leads and short the ends together, you should get a zero voltage reading. Today's digital meters have a very high impedance which allows them to accurately measure very small voltages, but also results in accumulation of a static charge when measuring an open circuit. It's not uncommon to measure some voltage without anything connected to the meter.
1639956
I have 2 units and have to issues with neither of them...I use it for basic AC and DC power reading takes. I do get some insignificant reading when power on but when connecting to the power source for measurement works well and power reading are correct.I hope this helps....
1639957
It may jump around a little at first. My Fluke would do this on DC Volts. Try testing an wall outlet and then when you have a reading and have disconnected it should stop flashing.
1639958
Mine appears to do the same thing (in hundredths & thousandths digits) especially when I shake the unit or leads. Goes to steady zero when I touch leads. I don't think this is defect.
504784
Look at the power supply, it should have a voltage shown on the label, then use a Volt Ohm Meter (VOM) to check the voltage. If it reads at or slightly higher than the rated voltage then it is probably OK and the problem is in the amplifier. It could be either unit causing the problem.If it is still in warranty you might be better off to get an RMA from the manufacturer and return it for repair or exchange.
1579003
I am sorry mine just worked instantly. Make sure you have it well connected and did not damage any pins. Maybe it is more than the display sorry
2002383
No I have never had any issues with my unit. If nothing is running my first thought is to check your GFI plug to see if it is tripped. If that is not it I would try to contact the company.
74323
I agree with the previous response. If you know the outlet is good and its fully plugged in and you push the on button and nothing happens most likely the power supply in the unit is bad. Time to return it.....
1639562
Yes, the display reading is in red text again black. When I come up the stairs at night with no lights I am able to see the reading of 0.
578222
Have not found a way, I think that's kinda the down side to it, digital readout is limited. Good luck
504783
Look at the power supply, it should have a voltage shown on the label, then use a Volt Ohm Meter (VOM) to check the voltage. If it reads at or slightly higher than the rated voltage then it is probably OK and the problem is in the amplifier. It could be either unit causing the problem. If it is still in warranty you might be better off to get an RMA from the manufacturer and return it for repair or exchange.
1831429
I never got mine to function even after swapping wires. I ended up returning mine and getting a digital one for slightly more and it has worked great from the moment I wired it in. Good luck. If the wire swap doesn't work, then returning it might be your best option.
81511
I would call the manufacturer. It sounds like something is wrong with the unit. Mine worked immediately with no issues, and I did NOT charge it before use....just plugged it right in and it worked. Sorry!!
1793666
Hold it near your computer screen and you should get some high readings or take it outside and hold it against your electric meter and if you are still getting 000 it may be something else because wants you turn it on and whole it near any and everything there produces electric and it should show you that it is working if not you know what to do on the return
1166864
It's one of 2 things. Either the unit is defective or your voltage source is unsteady. If it is an automobile that you are plugged into, the voltage regulator is probably shot or you have an unsteady load. A third possibly is that you have a poor connection to your power outlet. Now, this answer is predicated on the assumption that your conditions are static.it is normal for the reading to vary while driving the car.
1055428
Not sure, mine never does that. If you just bought it I would swap for a new one. Or make sure your connection to the outlet is not loose maybe? Hope you figure it out!
1542263
Not sure what the digital display would do on this model. It turns on; it turns off. I suppose some complex models might need such a display. This one is not complicated.
700982
There is a voltage issue, sadly. You need a step-down transformer, which is what I use.
2196650
Check the wires connected to the converter piece.......other then that id say send it back for a replacement
1892184
I had the same issue with the unit i installed. I looked closer at the specs and realized it is a dc 12 volt unit. If you are using an ac transformer, it will not function correct.