sony sent a e mail to best but and circuit city stateing there is a software problem with these models of sony 42a10, 50a10, 26xbr1, 32xbr1, and the 40xbr1, dont pannic its an easy fix call any service center or store you bought it at they can update the software via usb thumb drive.
Help these helps
I just bought a SOny Bravia LCD 40". It's great, but I've been experiencing these periodic blackouts where the screen goes black, but the audio continues. These episodes usually last a split second to a couple of seconds, but tonight, the whole set seemed to turn off and we had to turn it back on again. This phenomenon only seems to happen when we''re watching regular tv and not when we're watching DVD's. Is it the TV?
The box? The cables? The connection? I'm at a loss.