Vizio 32" squeaky/crackling noise from left rear of LCD, not from speakers? Any suggestions for a self fix?

appx 32" lcd TV began giving off a crackling noise, briefly (2-4 seconds) after being turned on. Noise is from left rear of set, not speakers. How (3 mo later) there is also a hissing sound coming from the same rear area. Also a faint ozone smell.