Power shuts off randomly

my receiver will just randomly lose all power and it will reset all the radio presets, the clock, the date. sometimes it will turn itself right back on, others i have to manually turn it on. lately, it wont even turn on when i push the power button. i have to keep pushing it, turn the car on and off, and finally it turns on. is there any way this can be fixed or do you think its time to get a new one? i have only had the receiver for two years this december :(