First, all crack the first step to remove the MCU and other useless chips, (because the MCU is a long power supply, do not disassemble will consume electricity is equivalent to self-discharge), second, then check the chip manual of the power chip to check whether the enable foot is opened or closed, This solution is mainly used for charging and boosting are separate charging bank three, if the enable foot is normal then check the power supply boost output foot there is no MOS tube, you can directly short pin, this can directly use the multimeter boost chip output there is 5V and then 5V after there to reach the USB output (the most common solution, is also the simplest solution, Fourth, there is a charging treasure with anti-disassembly switch, this charging treasure has a stroke fast close top on the shell, once the shell is damaged to trigger fast close, the use of battery voltage, large current directly burn the chip, this is the most cruel, in this case you can carefully pry open the shell, pry open the shell do not hurry to open, Always hold one hand with scissors to cut the battery power supply line, because the battery line is mostly on both sides of the shell, or you have a way to fix the switch, this time it is not a problem to open, fixed button crack and then weld back to the battery
1, you can first start from the top with the interface, and then disassemble the top cover sheet.
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2, the top surface disassembly is relatively simple, a little force can be broken off, after breaking off, you can see that there are four core fixing screws inside, and then use a screwdriver to remove the screws.
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3, after the fixing screw is removed, you can take out the internal components of the millet mobile power supply, because the internal only battery and motherboard control chip, and basically one, so you can directly draw it slowly.
The power bank uses a screwdriver to open the back cover to find the chip, remove it and remove it. If you want to remove it, you can open the back cover with a screwdriver. Find the chip, remove it and remove it. It will not affect normal use, but this value is not high, and the value is relatively low.
It is not recommended that you do so, you can buy a brand of power bank and use it directly.