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Redmi Note 9 can’t be charged and turned on.
Machine model:Redmi Note 9
Malfunction:Redmi Note 9 can’t be charged and turned on.
Maintenance process: when you get the mobile phone, connect the charger to the mobile phone first, and the measured charging current is 0.002A, which is intermittent. Access to the computer, there is 9008 mode, and there is no problem with CPU.
Redmi Note 9 can’t be charged and turned on Figure 1.
Connect the charger, and the charging interface is 5V. The charging chip PMI632 also has 5V, but there is no output.
Redmi Note 9 can’t be charged and turned on Figure 2.
Repeat welding charging chip, reloaded into the chassis, has a charging icon, and the current is more than 1A, so it can be determined that it can be charged. However, as the customer said before, it won’t work after shutdown. So test it again, turn it off and turn it on again. The phone can be turned on normally or charged, and the fault is perfectly repaired.
Redmi Note 9 can’t be charged and turned on Figure 3.
