How to Use Analog Multimeter in Mobile Repairing

This site contains affiliate links to products. We may receive a commission for purchases made through these links.

Are you getting anxious because your mobile phone is not working any longer? Is it dead? You should immediately get in touch with your phone specialist as quickly as possible. 

Of course, you will find various reasons behind the issues in your mobile device. That’s why you need to have it checked by experts so you can have it back in time. Whether your phone has fallen into the water or it’s experiencing overheating problems, there’s no time to waste. 

One of the practical and useful tools that mobile phone technicians use to fix a phone is an analog multimeter. In general, it’s mainly utilized for diagnosing mobile phone short circuit faults, the voltage value of the circuit, the resistance value of the components to confirm its quality, and so much more. 

If you try to repair a mobile phone, you will discover that the surface can’t directly conclude most faults. Hence, you need to use a reliable diagnostic tool to locate any suspicious parts and get some details to judge the good or bad. 

So, the question now: how do you use an analog multimeter in mobile repairing? This post aims to present to you all the information you need to know about this topic. 

If you’re ready, let’s jump in! 

Common Causes of Mobile Phone Problems 

Mobile phones are extremely beneficial. However, they have their fair share of issues that create frustration to users. Some of those concerns impact you more than others, especially as you depend on these devices to communicate with the world. 

Here are common problems with mobile devices. 

  • Low battery 

Continuously having a low battery is pretty frustrating, particularly when it stops you from using your mobile phone as it continues dying while you’re using it. 

  • Overheating 

Another typical concern with smartphones is overheating. If your device is hot to the touch after long use, then it’s a clear sign of overheating. Often, that happens due to high-performance apps or excessive use. 

  • Charging port 

Recurrent charging of your handset spoils the charging port and the charger’s wire that may render the charger non-usable. Further, incorrectly removing the charger or accumulated dirt in the port could cause it to operate poorly or loosen. 

What is an Analog Multimeter & How It Can Help? 

 An analog multimeter is an electronic device that is used to measure a wide array of electrical quantities. Its uses include:

  • measuring resistance
  • measuring current
  • measuring voltage
  • continuity test
  • diode testing 
  • transistor testing 

It uses a needle that is positioned on a numbered scale. It highlights many various quantities. Once you use the device to measure such quantities, the needle is then bent depending on the force produced by the quantity being calculated.

Inside this device, you will find a drum with a coil wound covering it—between a pair of permanent magnets. You see, a magnetic field is made every time a current passes through the coil.

Take note that a magnetic field is already present because of the magnetic field. That’s why it responds with the induced magnetic field, which triggers a force that moves the needle. 

How Do You Use an Analog Multimeter in Mobile Repair? 

First, you need to be familiar with basic steps if you want to use an analog multimeter. 

  • Connect the test leads to the multimeter
  • Use the setups below for measuring various quantities.
    • Use an AC socket to measure current and AV voltage 
    • Use an AA battery to calculate current and DC voltage
    • Use a wire to measure the continuity
    • Use a resistor to measure resistance
  • Connect the test probes to the element to be measured for every setup. Then, check the reading on your device. In the DC volt setting, the output voltage of different charging connectors, chargers, battery connectors, and batteries could be checked. 
  • Connect the probes to either end of your battery. Your pointer must move across the scale depending on the range you’ve picked. If your battery is fully charged, the point must point between eight and ten on the scale. 

But if not, you can choose the DC voltage range in your analog multimeter, which is higher than 10V. 

  • You can try the same process for other setups to calculate the corresponding quantities. 

As a tip: The key to exact analog multimeter measurement is multiplication and range selection. Everything else is the same to how and what you do using your digital multimeter. 

How Often Should You Calibrate Your Multimeter? Is It Necessary? 

The simple answer to this question is yes. Bear in mind that an analog multimeter always operates on batteries. That means their charge drains slowly, and hence, the device’s capability to offer precise readings also decreases.

That’s why it will help if you zero out the analog multimeter first before you use it for any mobile phone measurement task. Below are quick steps you can follow to recalibrate your tool:

  • Choose the resistance range on the dial
  • Connect the test probes to the analog multimeter and connect them to create zero resistance (take note that the negative and positive leads should touch one another) 
  • Your analog multimeter must read zero resistance
  • If it doesn’t, you can still use the zero out dial and bring the pointer to zero value on the scale (it is presented in most meters, either in the back or front panel)
  • That should calibrate your analog multimeter 

Final Thoughts

You see, using an analog multimeter for mobile repair is very easy. However, if you are still not confident using it on your own, you can always call a professional. Whether you need Android or iOS mobile repair services, these experts will offer you the best mobile repair service you need, helping you get your phone back. 

We hope you find this article on analog multimeters in mobile repairing informative and helpful. Always remember that the best thing about learning is nobody could take it away from you. 

What are your thoughts about this post? Share your insights with us by leaving your comments below!

Special offer for our visitors

Get your Soldering Iron Guide For DIYERS

We will never send you spam. By signing up for this you agree with our privacy policy and to receive regular updates via email in regards to industry news and promotions