How to Fix Fingerprint Sensor Not Working on Android Phone

Mobile repair is a vital skill today. Smartphones are now a key part of daily life. To be a pro mobile tech or fix your phone, you must know soldering, desoldering, and jumper wiring. This blog will teach you to solder, desolder, and make jumper wires for mobile repair. It will be simple and easy to understand.

What is Soldering?

In mobile repair, soldering helps fix broken connections, and faulty parts, and even rewire the device. If you want to master these essential repair techniques, enrolling in a mobile repairing course in Kolkata can provide hands-on training and expertise.

Tools You’ll Need for Soldering:

Before you begin with soldering ensure that you have the correct tools in your mobile repairing toolkit. Here are the basics that you will need:

  • Solder wire
  • Soldering Iron
  • Flux (helps the solder melt smoothly)
  • Soldering Stand
  • Tweezers
  • Desoldering Pump or Wick
  • Magnifying Glass

The Soldering Process:

  1. Preparation of Workspace: Ensure your workspace is clean and well-organized. You will also need a heat-resistant surface for work.
  2. Heat the Soldering Iron: Turn on the soldering iron and allow it to warm up. The end will heat enough to melt a solder wire once it's warmed up.
  3. Apply Flux: Prepare the area for soldering with the motherboard or components by wiping them clean and applying some amount of flux, which would promote a good contact point.
  4. Add Solder: Place the soldering iron at the joining area that requires soldering. You should now put the solder wire into the soldered hot joining. It melts and then runs to form a strong solid bonding in the joint.
  5. Cool and Inspect: Allow the joint to cool and harden. Check the solder joint for cleanliness and solidity. A good solder joint will be shiny and smooth.

What is Desoldering?

What is Desoldering

Desoldering is a process in which the solder is removed from a joint or component. In this, the old and solder part is replaced and it is a tricky and difficult process. But if it is done with the proper tools and techniques then it can be achievable. 

Tools You’ll Need for Desoldering:

  • Desoldering Pump: With this tool, you suck up melted solder after you heat it.
  • Desoldering Wick: Copper braid, which soaks up solder excess when heated.
  • Soldering iron: The same soldering iron is used to desolder.

The Desoldering Process:

  1. Heat the Soldering Iron: You have to heat the soldering iron as hot as possible, like when you are soldering.
  2. Use of a Desoldering Pump: This is a pump that sucks in the melted solder. A user heats the solder joint with the soldering iron's tip. They plunge the desoldering pump into the melted solder to suck it up.
  3. Use a desoldering braid: Use it in case the pump does not work well. Over the soldered joint, put the braid and place the tip of the hot soldering iron on top. The braid will absorb the solder.
  4. Clean the Area: Use some isopropyl alcohol to clean the area once desoldered and remove all residues.
  5. Verify the Joint: Ensure that the joint is free from solder. If not, repeat the process of desoldering.

What are Jumper Wires?

In case the solder was removed, it is advisable to inspect the joint to ensure the excess solder has been removed entirely. You would clean the region using a soft brush and a little isopropyl alcohol to remove whatever residue was found.

Tools You’ll Need for Making Jumper Wires:

  • Soldering Iron: To connect the jumper wire to the circuit.
  • Wire: A short length of wire preferably insulated, that can connect the gap in the circuit.
  • Solder: To solder the wire onto the motherboard.
  • Tweezers: To hold small jumper wires.

The Jumper Wire Process:

  1. Identify the Broken Trace: To start with, you have to identify where the trace is broken. You do this by taking a close look at the circuit board.
  2. Make ready the jumper wire: Prepare a length of wire by cutting a few centimeters. It must reach from point A to the other point, neither over- nor short-stretched.
  3. Insertion of Jumper Wire: This jumper wire has to be fitted on the circuit board so that the two damaged points are well connected. This will make both ends of the wire solder onto the board as a solid link.
  4. Checking the Connection: Once the solder has cooled off, check the wire for a secure fit and that it is stable with the connection.

Why Are These Processes Important for Mobile Repair?

These three processes of soldering, desoldering, and using jumper wires are significant in mobile phone repair. It enables a technician to rectify broken circuits, replace faulty components, and see that everything is functioning correctly.

  • Soldering attaches small things such as resistors or capacitors to a circuit board that ensures electricity runs properly.
  • Desoldering is useful when a replacement is needed or a mistake has been made.
  • Jumper wires can be used when all else fails to fix a broken circuit or bypass damaged areas.

The repair of mobiles without these skills would be so hard. How to solder, desolder, and jump wiring skills will assist a technician in cutting the cost of money, speed up fixing an issue, and also improve mobile performance.

Safety Tips for Soldering and Desoldering

Working with the equipment sometimes gets risky that’s why be careful while using the equipment. Here are some of the safety precautions:

  1. Wear Safety Gear: One should always have safety glasses as a precaution for protecting the eyes from the heat and potential splashes of solder.
  2. Work in an Aired-out Area: Welding produces dust and fumes that are detrimental. Ensure working in a very aired-out place or use the fume extractor.
  3. Do Not Burn Yourself: The soldering iron is usually very hot. Be careful of touching the pointed end, always putting it away in the holder when not being used.
  4. Be Organized When Using Tools: Keep your welding tools organized and make sure you do not leave your hot iron anywhere.

Conclusion

In the domain of mobile repairing, soldering, desoldering, and jumper wiring are some of the key skills a mobile repair person is required to master in the repair of common mobile problems or when learning the repair of mobile devices professionally. These techniques can allow you to work on your mobile phones without a problem with proper mobile repairing tools and training in mobile repairing.

Frequently Asked Questions

Is it tough to learn soldering for mobile repairs?

With practice and patience, even a beginner can learn soldering. Simple projects can help build confidence to start with bigger projects.

Can I fix my phone without soldering?

For most simple repairs, you can change parts without soldering. But a complex problem, like damaged motherboard connections, requires soldering.

What is the aim of soldering in mobile repairs?

This process joins two metal parts by soldering. It is like connecting wires or components on a motherboard to replace faulty parts.

What are some common mobile problems that need soldering or jumper wires?

Some issues include broken power buttons, bad charging ports, or damaged motherboards.

What Our Students Says About us on Google

c

Chandan Kumar

2 week ago

No.1 technical training institute in India.Best institute for mobile laptop tv printer home appliances and Ac fridge.

Nagendramani

4 weeks ago

Thank you Ak info for learning mobile repairing very well, it is great to learn from here.

Abhijeet

4 months ago

1 no. Institute India best for all u need about mobile repairing with lifetime support thanks ak info team.

Jammu ALA

11 months ago

Best security service available at Jodhpur Pal Road. Instant reply by staff and help to get guards on time deployment.

MAHMOOD KHAN

4 weeks ago

Best Android Repair institute in india..... Thank you so much Ak info team for making my career..

Neha Saroj

3 years ago

Ak info is the best Institute for advance and chip label repairing. Indias most popular Institute nad have new tips and tricks for repairing Android and iphone

akshay kumar

1 years ago

Ak info is the best technical institute in India.Advanced chip level syllabus and lab facilities.

PATEL HD 4K VIDEO

2 months ago

Best technical training institute in India for mobile, laptop tv printer.

Neha Saroj

3 years ago

Ak info is the best Institute for advance and chip label repairing. Indias most popular Institute nad have new tips and tricks for repairing Android and iphone

AK Info Mobile Repairing Delhi Branch Address

5/63 UG Floor, Karol Bagh, New Delhi, Delhi 110005, Near Harnam Singh Charitable Hospital, Karol Bagh, New Delhi, Delhi 110005


AK Info Mobile Repairing Patna Branch Address

SNY Complex, opposite Dr. Zakir Hussain Insititute, naya tola, Kumhrar, Patna, Bihar 800026