HDMI quit working

I use this tv for a PC monitor, HD satellite viewing, and XBOX 360. I was having intermittent problems with the HDMI audio bleeding in to the other inputs. Sometimes if for instance I turned on the PC, I could hear the audio from the HDMI output on the satellite receiver through the TV speakers. Other times, I might just hear a crackle in the audio when in PC mode. If I switched back and forth between HDMI and PC inputs a couple of times, both issues would go away. I tell this just as background to what happened next. Since I have my PC hooked to the VGA input on the TV, I have been forced to manually switch the HDMI input from the Satellite receiver to my XBOX 360. (Sorry, I was too cheap to buy the $100 switch). Anyway, I usuall make this switch hot (TV on, Satellite receiver on, but XBOX off. This system although a pain, was working until yesterday. I was watching HD satellite, when I decided to play XBOX. I switched the HDMI cable, but when I turned the XBOX on, it wouldn't start up. I immediately assumed my XBOX had crapped out , but when I switche the HDMI cable back to the satellite, the TV would not recognize the signal. I have since tried the XBOX and satellite on another tv with HDMI, and both still work fine. I am thinking that some sort of switch in the tv has gone out, but I don't know. Should I just junk this TV for a new 1080P? My problem with doing that is that I use PIP with the PC on one side, and HDMI on the other. This tv does that, but I can't find another tv that does.