3 Tips for Soldering Jumpers in Cell Phone PCB Repair For cell phone repair technician, solering a jumper are very common when some problems caused by the broken track. The tracks can be seen on the PCB of old cell phone models, so you can easily check their continuity through a multimeter. But now the track for not increasing the size of the PCB, we'll have to search through schematic diagrams or jumper diagrams.
First method is to check the damaged parts. If it is not working, you will have to replace a new one. The next step will be to do PCB tracking. It is easy to do repairs if
technicians follow schematic diagrams or jumper diagrams. so which are the best ways that you can search tracks on a cell phone PCB when you do motherboard repairs? 1. Schematic Diagram For more professional cell phone repairs, we advicse a special schematic diagram, it is a diagram showing the entire network tracks work on cell phone PCB. It will include all parts of the circuit track, the sound section, the network section, the charging section,
the power
supply section, etc. If you learn how to read and understand these diagrams, you will become more professional to be available for all kinds of hardware failures. To do this, you will have to trace each and every track with multimeter and make jumpers where you are not able to hear beep sound. If the problem still doesn' t get solved, you will have to either reheat or replace the corresponding IC. For instance, if there is no charging on your cellphone, you
will have to check/reheat/replace the charging or power IC. 2. Google Images You may type in Google with the cell phone faults as your demands, now click on the picture and you'll see a lot of images for traces that you have to check. Choose the one that you can have a clear understanding! Now use the multimeter and place it in continuity. Put the probes of the multimeter on the 2 points displayed in the image you checked. If you hear a beep, then the track is working, then you have to check the continuity of other good images too. If you can't hear a beap, you will have to solder a jumper wire between the 2 points. In these diagrams, if you are asked to check or replace resistors and capacitors or remove some parts, you have to do it! You might be surprised at why they ask you to remove parts, but sometimes it did work!
3. Motherboard in Same Model It is also one of the ways to help you when looking for tracks on a cell phone motherboard. Although this is not feasible, some technicians try to track tricks through the same model PCB. They examine the continuity of random orbits in a working PCB, and then examine the same ones in PCB that are to be repaired. This way also sometimes succeed! Note: some schematic diagrams or images may not be accurate, so you will have to take some risks. It's better to use the ones from professional cell phone repair
websites to reduce error risk images! Looking for more professional cell phone PCB repairs or corresponding tools? Please contact VIP FIX Shop Team!