Does anyone know any basics about tv repair? i have an old tv that still has good sound and picture, but developed a loud noise–sort of a buzz or like a fan (don't know if TVs have fans). This noise is independent of the volume (you can hear it as soon as it is plugged
in, even if the volume is all the way down.) Repair shops want 50-75 dollars just to look at it. I can't justify that right now, but hate to throw it away if it is something I can safely fix.