Hello, this is an inverter failure
1: Check the battery to see if the voltage value is normal.
2. If there is no problem with the battery, check whether the DC to AC motherboard is damaged. First, visually check whether the components are burned out. If there are any, replace the damaged components directly. Visually check that there are no problems. Use a multimeter to measure whether there are any components. Short circuit. If there is a short circuit, replace the short circuit part. If there is no short circuit, it is judged that the cpu is broken. Just replace the cpu.
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