'''++@tgonz++'''
post an image of what your screen is showing so we can see what yuo see. Use this guide [guide|21499] for that. It could be an issue with the T-con board or the panel. Verify that your TV is a '''++Samsung LA40R81BD++'''
You could rule out the T-con board by unplugging the individual ribbon cable for the side that does not show properly and see if nd what that changes. Due good side first, then the one that dispalys mirrored. Let us know what you find.