If you can upload a photo, but that fault is usually given by the optical unit, which inside brings 3 LCD micas that is where the images are generated, the lamp is only to project the images generated in the LCD, these Over time, they are usually burned or deformed by the intense light and temperature generated by the lamp, or sometimes the connections are detached so you have to verify it, the optical unit is the most expensive part of the TV even more than the lamp.
download the service manual of the following. url.
https://elektrotanya.com/sony_kdf-50e2000.pdf/download.html