Servicing Harman Kardon Onyx Mini Broken Error Panel Button and Battery Indicator Led Not On 

This time, the patient's service was Harman Kardon Onyx Mini, whose panel buttons were damaged, all except the power on and off button. In addition, the battery indicator LED also does not function. The cause of damage to the circuit for the control panel, the resistor on the reset broke and after replacing it finally returned to normal.
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