I used the service mode to re-frame my picture, which is now near perfect, however since doing this and saving the settings, the sound is now abit strange ( annoying really). The sound is being produced with very high pitches ( Trebble) being exagerated. Does anybody have any idea how to correct this or know how to do a reset on the TV. The service mode instructions that I found floating around on this site only allows you to modify and save the frame settings. I have had my TV reset once along time back when it was under warranty by a service engineer. But he didn't show me how. Any advice or informtion would be greatly appriciated.