Green Tube Off

I have a sony kp-57WS500and the green picture tube is off, I pulled the front speaker off and was going to switch the panels from red to green like i read in the other posts. I discovered on the board under the green picture tube had a resistor that was burnt, could this be the problem?I don't have a service manual but the resistor is r7217, do you think this was the problem. Do you have any information on this part and where to by one.