The solution for Onkyo mobile phone dpx1 not turning on is as follows:

Turn on the power, hold down the VCR/DVR button and press the ON/STANDBY button at the same time, wait for the Onkyo amplifier display to show clear logo, no manual operation is required, wait for 1-2 minutes, and the Onkyo amplifier will enter standby mode to reset settings.

Onkyo's DP-CMX1 is a music player with mobile phone communication functions. It uses the Android system and has higher RAM than the Sony WM series, and can run third-party Android music applications more smoothly.