Hello all, but especially to Woodman :^)

I have a 1.5 year old Toshiba 27" flat crt tv that just recently has decided to emit a high-pitched noise after the tv has been on for a while. I can usually fix the problem by turning off the tv, waiting a few seconds, and then turning it back on, but this is only a temporary solution as the noise inevitably comes back. I talked with a buddy (an electronics tech) at work and he suggested that it is caused by a vibration at ~16kHz of something in the power supply (I think that is what he told me). He said they have a spray can of a silicone-based product, which when sprayed on the offending component will stop the sound. Does any of this make sense? Of course, the warranty is over (only 1 year) and if there is a reasonably simple fix that I can do myself then that's what I'd like to do. I'll be honest, the noise isn't completely driving me crazy yet, but I think it's only a matter of time . . .

Thanks in advance for your help,
Mike