hifonics is a cheap *** brand, I'm sure many others use this same feature i just cant list off any iv owned, all the amps iv thrown into protect have never turned off lol, and it was always a solid light. if its blinking theres a good reason for it. and fyi ANY time iv seen a thermal light on is ether as the amp throws it into protect(with the thermal light flashing for a split second right before it shuts down and goes to protect) or when it stays lit iv seen that three times and never seen the amp working again, had one guy send it one in, it was like 250 to fix it and you can get the equivalent new amp for half the price. i think you blew the amp imo