I've been having major problems since new with a Sanyo CE28WN7.
Awful colour, and now the picture has slipped so the bottom right corner is lower than the left. The picture is also too large for the screen (on screen graphics are off the bottom of the screen).
The service people from the company I bought it from inist there is no problem even though it is still under warranty!
My last resort is an old friend who is a TV tech, but has been retired for several years now. He won't open it up so as not to invalidate the warranty (for what that's worth), but has said he'll put it on the bench if I can get into the service menu.
Any help greatly appreciated, before I write this terrible TV off.
Unplug the TV and press the volume down button on the TV while you plug it back in. Be sure to write down any adjustments you plan to change first. Adjustments are specific to each TV, if you mess something up, they'll be the only way back to where it was.
Mine isn't that model, so the service menu is probably different on yours. Unless you can find something on the net to describe what adjustments do what, I doubt you can find the right one. On mine there must be 100 or more adjustments that aren't clearly labeled. The adjustments are letters and numbers, not actual names like tint, color, etc. If your TV is like mine, you'll need a service manual or some info on the net to find the right adjustments. You might try AVS forum, that's where I found how to get into the service menus on mine and the pincushion adjustments.