I just recieved an RCA 60" rear projection TV. (RCA P60752). It is missing the Blue tube, the previous owner pulled it out before deciding to buy a new one instead of fixing. I have found the replacement tube, my question is- before spending the money to order a new tube- is it ok to power the TV with just 2 tubes inside? will I get a picture? Just want to make sure the rest of the TV works before spending the money on a new tube. Also dont want to ruin anything by applying power with missing tube. thanks in advance!