LG amp turning on and off, why?

[swainey32]

ive got the LG Xtremo LM-M1040,
and over the last 6 months, whilst listening to music, it turns it self off, display light and all disappear, but if i disconnect it from the wall socket after 10 seconds when i plug it in again, it works,
it was fine initially, but now its doing it every 5 minutes or less,
i thought it could be the actual power source, but ive had it checked and run a light off it at the same time without issue, so its down to the actual amplifier,
anyone have any idea to what could be wrong, or why its doing this, and if so, how can i fix this? or do i just need a new amp?
any opinions or answers would be appreciated
cheers

[HayZee518]

only thing I could figure on is that there is a circuit breaker in the output of the amplifier a resettable one [auto] I have a karaoke mixer amp that does just that only there is no breaker in the circuit. there is a detection circuit that is installed that cuts out at a predetermined level of audio signal [voltage and current = power] thats the way the voice coil operates. voltage and current at a varying frequency to produce sound.