hi guys! especially to my fellow pinoys..

anybody knows how to repair this sendo unit that i have? First there was a problem in the keypads, tried cleaning the contact between the board and the keypad membranes... it worked for awhile... after a day, the damn fone hangs.. tried cleaning then it worked again... now after a day again, it has no power... what do i do?? i'm stumped... i dunno what the problem is.. can anyone help me please??

Thanks in advance guys!!!