How to Repair Xiaomi Cell Phone Redmi 7 Does Not Turn On Diagnosis and Measurement with Oscilloscope
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Many times when you have or are repairing a cell phone that is off or does not turn on, you have already tried to change the Power IC (PMIC) or Charging IC (IF PMIC) and the fault is still not solved. Well today we have one of these cases, in a Xiaomi Redmi 7 that they already tried to do the same thing and they were unable to find the solution, they brought us to our laboratory. We are going to learn a little about the review technique to make a diagnosis of this type of fault correctly by making the corresponding measurements and analysis, this time we combine the use of measurement with a multimeter and Oscilloscope to give a much more detailed and graphic explanation of this power-on problem. 00:00 Failure Explanation 01:51 Equipment Disassembly 03:42 Battery Measurement with Multimeter 04:46 Diagnosis with Power Supply 08:20 Failure Analysis with Schematic 12:25 Measurement with Oscilloscope 16:10 Measurement and Replacement of Damaged Component 23:20 Testing of Repaired Equipment 24:50 Conclusion and Recommendation Post Repair Don't forget to leave your comments to improve future videos and other topics of interest to all of you. If you want to train online for the year 2023 with us, you can obtain the information at: https://wa.me/message/CYZEJHETKXWPM1 Register on our Official Page of our Online Academy: https://optimus.academy/register/ Instagram: / optimusrepair Facebook: / optimusrepair Tiktok: / optimusrepair Schematic Software used: BorneoSchematic Contact for Collaboration and Commercial Proposals (Not technical inquiries): [email protected]
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