GeForce GTX 780 Ti Superclocked Multiple Bad Ports

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Just installed a new GTX 780 Ti about a week ago. Using the DVI-D port for my Samsung 27" monitor, and HDMI port connected to a 42" Sharp TV. All is well, have been updating to the latest drivers as they have been released.

Two days ago, the HDMI port feeding my second monitor seems to have died. It is still recognized in the nVidia Control Panel as an active display, items still move to it as if it were an active display, however the screen is black; no video output.

I open an RMA ticket with EVGA.

In the interim I wanted to continue to have dual monitor support, so I setup the 42" TV to the DVI-I port. All was well, and working with no issues until this evening. Turn on the computer and no video output on the DVI-I port now. Same symptoms.

It seems odd to me that the port will work just fine when I am powering down, and it only goes bad as I am powering up for the first time. It also seems strange that the same problem has occurred across two different ports at different times, and never once to the primary port.

Would a bad card function in this manner?
 

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I'm not sure I see how it could be the television. The TV has functioned as a monitor for a couple years now on a GTX 570. It also worked using the second port after the first port went bad on the 780. It also still works simply as a television using the same ports from my iPad.

If the problem was the television I would suspect the ports would no longer function on the television.