When you press the Power/Sleep button the radio turns on and displays a number 90, or some other numbers. This is the play time that the radio will stay on then turns itself off. It could be that yours is configured with a sleep timer set to 01 minute, 10 or 15. You need to set the timer for a longer period. Thus we turn it on by pressing the Power/Sleep button, read the timer length then press again. Keep making short presses: The timer will cycle through all preset sleep timer durations. Select the length you want.
S350 incorporates with micro computer chip (the component that
controls how the radio operates). If the radio has been subjected to
abnormal environmental conditions, the micro computer chip may
hang up and the following symptoms may appear
The display shows nothing and the radio cannot be turned on by
pressing POWER & SLEEP button.
The display shows random characters or does not work properly
although the radio can receive stations normally.
In these cases, you might need to reset the radio. To reset the
S350, unplug the external adaptor (if one is being used) and
remove the batteries from the battery compartment. Insert a
pointed object, such as straightened paper clip, into the RESET hole
on the right, front side of the radio and gently press and release the
button inside the hole. Then plug in the AC adaptor or reinstall the
batteries
OK.
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