Your digital multimeter should last for a number of years with reasonable care, but there may come a time when you multimeter malfunctions and you’ll have to decide whether to repair it or buy a new one. Before going out and looking for a new multimeter you should use the following techniques to troubleshoot and repair you multimeter. The first step is to check the battery. Try to power on your. 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.

Apr 12, 2014  Originally recorded March 22, 2014. This is a review of the Harbor Freight Cen-Tech 7 Function Digital Multimeter, Item # 6. It likely also applies to its bigger brother, the 7 Function.

If your multimeter powers up but you aren’t getting accurate measurements you may have faulty test leads. Set your multimeter to read resistance and touch the test probe leads together. It should read zero ohms. If you have resistance ratings of over one ohm or the reading is erratic, you should be able to fix the problem by replacing the probe leads. If you still haven’t been able to address the issue the next step is to disassemble your digital multimeter.

Use a small screwdriver to remove the screws holding the case together. After you’ve opened the 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. If it’s blown, replace it. If it’s a ceramic fuse you’ll have to check its resistance with another multimeter and, if there is no resistance, you’ll need to replace it. (Consult your multimeter’s manual to find out which fuse you need.) Look for wires and other connections that may be corroded or broken.

If you do find a damaged connection desolder it with a soldering iron and wick and resolder it. Check for loose parts or screws inside the multimeter’s case and fix them in the appropriate way. Reassemble your digital multimeter, set it to measure resistance, and touch the probe leads together. It should read well under one ohm.

If the multimeter is still malfunctioning, it may be time to replace it. George George Leger has a Masters in Electrical Engineering from Stanford University, worked in private industry pioneering surface-mount technology and in government research labs for twenty years, published several papers on surface-mount technology, co-authored papers published in national symposiums on accelerator technology, was past president of SMTA and an adjunct professor at the community college level, holds a patent, and is a certified microchip design partner, serving as a consultant to many companies developing electronic circuits. You May Also Like.

• 7 FUNCTION DIGITAL MULTIMETER 69096 OPERATING INSTRUCTIONS Visit our Web site at REV 12a Copyright 2011 by Harbor Freight Tools. All rights reserved. © ® No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools. • Safety Warnings and Precautions WARNING: When using tool, basic safety precautions should always be followed to reduce the risk of personal injury and damage to equipment. Warnings continued on page 3. Download game spiderman 3 jar 320x240. SKU 69096 For replacement parts, please call 1-800-444-3353.

• Any part that is damaged should be properly repaired or replaced by a qualified technician. Do not use the tool if any switch does not operate properly.

SKU 69096 For replacement parts, please call 1-800-444-3353. • Do not test voltage on AC circuits higher than 750 volts. Do not test voltage on DC circuits higher than 1000 volts.

Do not test current on circuits higher than 10 amps. SKU 69096 For replacement parts, please call 1-800-444-3353. • Measure DC conductors carrying up to 1000 VDC. Turn the Range Selector Switch to 1000 DCV setting. Follow the directions above under “AC Voltage Measurements”, only use the DC settings instead.