HI ALL May be ..Who has ideas how to remove.. To solve this провлему Quality images (video-picture) - EXCELLENT ! But here declared (guaranteed) by the manufacturer Quality of a sound - Virtual Dollby Surround - does not correspond to this model. Let's me to explain: 1. According to the electric circuit for the given model Should be established - 4 dynamics.. Right - left.. Central (on the forward panel) Sub-buffer (inside TV) 2. Are actually established only 2 dynamics- .Right - left.. They do not provide - quality of a sound - Virtual Dollby Surround.. since. At 30-40 % a level of loudness - (is smaller than 30 w RMS) On some frequencies - resound ( there is a resonance ) with the case of the TV !! <<Main problem ... Also deform a sound - especially at viewing films with DVD. If the frequency-spectrums to clean(remove) all frequencies - that a sound picture- - In general very poor, like as " a flat sound " - as in the cheapest Models TV. On my inquiry - how to improve sounding (to clean//remove) a resonance... A tinkling sound from case TV)- Local PHILIPS Service - speaks that can help nothing.