Ive got a 18 month old Daewoo (dont laugh i bought it before i really got into home cinema or found this site!) plasma screen. It has developed a loud buzzing noise which gets worse when its displaying a bright image and almost silent with a dark one.Because of this I think this is a problem lies with its power transformer ? Daewoo customer services ( or lack of !) are worse than useless and after them taking it away 3 time's ive now given up on them. Does anyone have any expirience with replacing the power transformer with a better performing one or is able to point me toward a shop near newcastle upon tyne who may be able to help ? failing that has anybody got any suggestions on how else i could shut the thing up ??