Black Circle on LCD Monitor

I have a Sony LCD Monitor. It suddenly has a black circle on it about the
size of a quarter.

Does anyone know what causes this, or if it is repair-able?

Thanks for any advice.

On Apr 16, 4:06 pm, "Buck Turgidson" <j...@hotmail.com> wrote:
> I have a Sony LCD Monitor. It suddenly has a black circle on it about the
> size of a quarter.
>
> Does anyone know what causes this, or if it is repair-able?
>
> Thanks for any advice.

Is it under warranty?