Mac mini thunderbolt port stop working

Good night.

First, I apologize for my English.

I have a mac mini (2011 model). Two days ago there was a power outage and the mac shut down. After turning it on, it failed to recognize my TV connected through the Thunderbolt port (with a adapter THUNDERBOLT -> HDMI).

When I disconnect and connect the adapter into the thunderbolt output, the screen flashes (as if he had recognized the second monitor). However, the monitor does not work.

Some Details:

1) In the monitor settings, only the main, connected by HDMI is detected;

2) On the "System Information" screen, the "Thunderbolt" item appears to state “no device connected";

3) I've done the reset PRAM / SMC.

Can anyone help me? Does my thunderbolt output fried?

Thank you,

Mateus.