i would look at the PS, i had a box that was on and when i got home it was off, so i tried to turn it on and nothing, so i unplugged the cord from the box for about 10 seconds and then pluged it back in and the power light came on for about a sec and then back off, changed out PS and back on it came and running fine everysince. Thats where i would look first, its cheaper and if it is not it, u will always have a backup PS good luck