andy.milot without seeing the device (main/power board etc. it is hard to determine what is going on. If it has worked for your before but started recently with the issues then I would start off by replacing the battery. Low power can/will prevent it from coming on and working properly. If that does not resolve you will have to disassemble it and check the power board.
andy.milot without seeing the device (main/power board etc. it is hard to determine what is going on. If it has worked for your before but started recently with the issues then I would start off by replacing the battery. Low power can/will prevent it from coming on and working properly. If that does not resolve you will have to disassemble it and check the power board.
Harman Kardon Onyx Studio 2 Battery Replacement - iFixit Repair Guide