What is the reason why the ammeter does not react when the power button is pressed?

What is the reason why the ammeter does not react when the power button is pressed?

A: The current meter has no reaction when the power button is pressed. Most of this situation occurs when the power-on loop is not normal.

The main reasons are:

(1) The battery contact is damaged so that the power cannot be sent to the power supply integrated circuit;

(2) Poor contact of the power button;

(3) The power-on key to the power supply integrated circuit triggers the circuit between the feet to have a virtual soldering scene;

(4) The power supply integrated circuit is damaged;

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