For my Sony 50" Kdfe50a10 I followed the instructions listed over at AVS forum to get into the service menu and check bulb life. It is not within the standard menus. MY directions are below:
In standby mode, press the buttons on the Remote Commander sequentially, in rapid succession, as shown below:

1. Press Display , Channel 5 , Volume + , Power ON

2. To enter BE-micro service menu, press JUMP 2 times.

3. To display the lamp time, press Channel-4.
The screen displays:
“Total lamp time is 14 hours”

4. To display the panel time, press Channel-4.
The screen displays:
“Total panel time is 14 hours”

5. Press (jump) to return to the debug screen

6. From debug screen press (power) to turn the TV off and wait for the bulb to go out

"Standby Mode" means the tv is "off", and the "debug screen" is the first screen you see when you enter the Service Menu.


-David