Upgrade your Sony TV

if your TV won't turning off or won't turning on after 1200 hours operation, it's time to upgrade it's firmware.

Models affected are:

Bravia
KDL-V26XBR1
KDL-V32XBR1
KDL-V40XBR1

Grand Wega
KDF-E42A10
KDF-E50A10

Source : http://www.updatemytv.com/

So check your tv model.