Hi, Firstly, I have to tell you that my English is not my first language, so excuse me if you have difficulty to understand me. I live in Montreal, Quebec, Canada. I have a problem with my projection tv: I have the sound but not the image. When the power is on, at the back of the tv the color guns are red and green and there is a small orange light(LED), but the blue one doesn’t light up. It seems like some clear oily liquid have flew under the blue color gun. I think that the blue color gun has to be change, but I don’t know where to purchase one and how much it could cost. I think I would be able to do it myself, but I need to know if it would need an adjustment after. Do you know where I can find a color gun? Can I purchase one by internet? Because I can`t find one in Québec, Canada I hope that you’ll be able to help me. Thank you.