When swithing on Ambilight on my Philips 32PF9986 the lights gives a very annoying "hizz" sound which makes it unusable to me. I have read a couple of other posts on the Internet about this, but very few concidering the people who have this TV. So please could all the users who are experiencing this post it here. I want to know if its something that is occuring on only some models or all. If I can replace my TV to fix it this would be nice to know. This sound is of a very high (or low?) frequency that I guess not all people are capable of hearing. Its the same noice you sometimes get from some lamps with dimmers on them. To me it makes Ambilight unusable, so its a definitive show-stopper.