commercial mode?

I have a 27in t.v it is stuck in commercial mode and I dont have software to change it back. what could I do to bypass this is there a code or something? the model # is pa5027 c102 phillips. t.v. reciever 347h e10839, I put the numbers that were on the label on the back of the t.v. I had gotten the t.v. for a gift and It was used in a mall with about 8 other t.v.'s and they were all like this one hooked together with a dvd mainframe. would be cool if you knew what was up!