HDMI/no sound issue on Sony Bravia TV (1 Viewer)

I've got a Sony Bravia KDL with a Blu-Ray and DVR both hooked up via HDMI cables directly to the TV. The other night I accidentally hit the reset switch on the power strip that everything (TV, BD, DVR) is plugged into. When everything came back up the picture worked fine, but there was no sound on either device. I've tried everything I can think of - doing a hard reset of the TV, unplugging/plugging everything, swapping out HDMI cables, using different HDMI ports on the TV, etc. Nothing seems to work. I tried hooking up the Blu-Ray to another TV via HDMI and it worked fine. And I tried hooking up the Blu-Ray to the problem TV via RCA plugs and that worked fine. So it seems like there is an issue with the HDMI ports on my TV. Anyone have any ideas? This is a 4 or 5 year old TV out of warranty, so I'm fearing the cost of repair would be high.

Have you messed with the audio output settings on the TV? Since RCA worked, sounds like the TV isn't outputting the sound correctly.