Hi, Possible problem for system shutting down is when the sound IC on the system is getting weak and can't power the system volume up to the max volume range,itshuts down. It's Protecting the system form getting damaged by always shutting down. You will need to replace the Sound IC with another one for i to power up the system to it maximum volume range.
Have a nice day..
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THANKS FOR THE HELP I FIXED THE PROBLEM ON MY OWN, I ADDED AN ADDITIONAL HEAT SINK TO THE POWER OUTPUTS CICUITS AND IT FIXED THE PROBLEM! UNIT WAS SHUTTING DOWN BECAUSE THE POWER OUTPUTS TRANSISTORS WERE OVERHEATING!!
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