I have a 50vs810 dlp. The blue and red lights

To check if its the lamp, remove the lamp and check for damage. Sometimes if the lamps not broken chek for white spots on center electrode or if the mirrored backing is discolored. The first thing a repair shop will do is replace the lamp to see if thats the problem so you might as will replace it yourself and save yourself the extra money. In the owners manual it will tell you how to replace the lamp and the part number of the lamp along with the phone number to order it. Make sure the lamp is not a generic rebuilt one because some dont work. You might find one on line also.