Projection TV screen repair

If the TV is older than the son, you might consider just replacing it.

The outer lens is the lenticular, the inner is the fresnel. Call your local shops or Toshiba distributors with the model number. Expect to pay at least a couple hundred $ for it. If you measure the exact dimensions of the screen from behind you might get lucky and a local shop will have one the right size or one that they can cut to fit for cheap.

Leonard

FWIW, replacing the lenticular is not as easy as you might think. The lenticular screen is attached to the fresnel screen in a specific way so that the fresnel screen is allowed to hang freely, which prevents it from bowing. It's very easy to get small bits of debris in between these two screens when assembling them, which can make visible shadows on the screen.

I would check prices for new tv's if the tv is more than a few years old.