Odd question about power cord . . .

[backtothecanvas]

Today i lowered the brackets on my TV mount to get the set to sit about 4 inches lower. This in turn required 4 more inches from its power cord that it didnt have to give based on the way its ran through the wall, etc. So i had to add a small 3 foot extension cord into the power surge protector then plugged the TV into the extension cord. My odd question i guess is, by doing this do i lose any "quality" in the picture or any other facet of the setup? Paranoid thinking possibly but i figured this board and its knowledge could quickly put this worry to rest??? Thank you for your time!!