Does anyone out there know the sequence of buttons i need to press to open up the Service Menu on this TV? it's a flat-CRT (tries to be a flat panel, early model from 2003) HDTV i got for free, all resolutions work all the way to 1080i (excellent picture!) but it has a minor pincushion effect on the left and right sides, not bad but seems i could fix it if i adjusted it but adjustment is only possible through the service menu, and i don't know how to get into it. thanks