Hi, im building my first amplifier. its 1w tda2822m. and i have a problem. yesterday, i connected 4AA bateries as power supply, and it worked good. then, after 2 hours, i tried to try how it works again, and then, it didnt work. tda2822m just heats up, and it becomes very hot to touch in less than 10s. what can it be? any suggestions? And sorry for my english.