Why is my multimeter not working?

If the multimeter doesn’t turn on or the display is dim you may have a weak or dead battery. Simply replace the battery and you should be good to go. After you’ve opened the multimeter locate the fuse and remove it. If it’s a clear glass fuse inspect the inside to see if the thin wire within is burned out.Click to see full answer. Besides, how do I know if my multimeter fuse is blown?Measure the resistance of the fuse. If it’s very low (close to 0 ohms), it’s still good. If it’s very high (open circuit), it’s blown. A 200 mA fuse should have a very fine wire visible inside the glass.Subsequently, question is, how do you reset a multimeter? How to Calibrate a Digital Multimeter Set the multimeter to the highest resistance range by turning the dial to the highest “ohm” setting. Touch the test probes of your digital multimeter together. Press the calibration knob until the display reads “0” on the digital multimeter if you don’t see “0 ohms” initially. Just so, how do I know if my multimeter is working? It should read something in the range of your voltage (220 or 110 – it depends on your country levels). To check the current you need to a loaded circuit, like a battery connected to resistance, say a 1.5v AA battery to a 100 ohm resistance, and put the multimeter in series to the circuit. It should read around 15 mA.What should you not do with a multimeter? Safety Tips to Measuring Voltage With a Multimeter Do not use your test leads if the protective insulation on the leads or probes is cracked or worn. The movement of current from one hand to the other during an electric shock is the most dangerous. Both DC and AC voltage can be very dangerous.