I've been trying to access this service menu following the instructions in the problem thread by dtsrules. The instructions were Bass=Full Treble=none press -/v under the flap and hold on the remote When I do this I don't get anything. Can anyone give me any pointers to where I might be going wrong? I'm very happy with the quality of the picture except that the geometry is very poor and on the left side of the screen there is significant over scanning. Thanks in advance.