Hello,I have a philips/magnavox and I think it's a 55" I purchased years ago.The model# is 9p5534c103 and the serial# is 58267977.The problem I'm having is focusing, I took off the front,cleaned the inside and nothing changed.It's like you have to try and focus your eyes on the set.I was told by one of my relatives that I would probably need a display bulb.If I can, I would like to repair it myself being one of the recent unemployed from layoff. Thank you