Hi,
The phenomenon I can see is that:
1. When the power is turned on, the power indicator light is brighter, then the other lights are not lit, and the 5V power indicator light is slowly dimmed, and then it is weak or not bright;
2, the chip at the antenna is relatively hot (normally working for a long time will be hot), there are some rust around, then use the multimeter to test the board power interface positive and negative with no multi-charge, found the multimeter beep (representation Here the path), the resistance found that the resistance also dropped significantly, so I suspect it may be because there is a short circuit somewhere inside!
It may be because our mobile power supply device is of poor quality. Because there are multiple modes, although it is 5V, it may not be 5V. Therefore, the voltage is too large, and the chip is burned out, resulting in a short circuit.
1. When the power is turned on, the power indicator light is brighter, then the other lights are not lit, and the 5V power indicator light is slowly dimmed, and then it is weak or not bright;
2, the chip at the antenna is relatively hot (normally working for a long time will be hot), there are some rust around, then use the multimeter to test the board power interface positive and negative with no multi-charge, found the multimeter beep (representation Here the path), the resistance found that the resistance also dropped significantly, so I suspect it may be because there is a short circuit somewhere inside!
It may be because our mobile power supply device is of poor quality. Because there are multiple modes, although it is 5V, it may not be 5V. Therefore, the voltage is too large, and the chip is burned out, resulting in a short circuit.
Now, Powering avr1642boost alone for 5v, found that the light is not bright, the current is 0, for no incoming power, the board is broken? Can you help guide how to repair?
