If the device will not turn on after using the left side button/switch to power it on, the left side button/switch may need to be removed and reinstalled or replaced.
This guide may help you with your left side button/switch problem. >>
Also, if the device will not turn on, the internal headphone adapters may need to be removed and replaced.
This device is plugged into and powered by iPod or iPhone devices. If the device will not turn on, the internal battery may need to be replaced, or recharged.
If the device is on, but the LCD is not visible, the wiring of the backlight may need to be replaced or mended. If the LCD contains extreme amounts of defective pixels, or is extensively cracked, the entire LCD may need to be removed or replaced.
This guide may help you with your LCD problem. >>
If the radio will not play on the device, the radio’s internal FM transmitter may need replacement.
The central button is the large, light colored button located in the center of the device, directly below the LCD screen. If your device is on and responsive, but unresponsive when the central button is pressed, you may need to adjust the placement of the central button inside of the device so that it is correctly aligned with the pressure points located on the circuit board or complete replacement of the button may be necessary.
This guide may help you with your central button problem. >>