Hard Reset Harman Kardon AVR-171 Amplifier

How to troubleshoot or setup starting with a hard reset a Harman Kardon AVR-171 Amplifier receiver to factory default settings if it is not working or not connecting or if it is frozen or not responding, the factory reset is a good troubleshooting step. You can also restore the factory settings to setup your device as new. Found in the Harman Kardon AVR-171 Amplifier user manual. Harman Kardon AVR 171 is a surround receiver that delivers a power output of 100 W per channel within the frequency range of 20 Hz to 20 kHz at 8 Ohm.