The owner's manual for the TV is here:
Panasonic PT-40LC12 Support and Service Information
Page 60 tells how to replace the lamp. This s a link to the manual for the bulb (Panasonic TY-LA1500 -- you can google it if this link causes you problems.)
Panasonic - TY-LA1500 LAMP Manual
If that doesn't work, try this:
Panasonic TYLA1500 MULTI MEDIA DISPLAY TV - LAMP Manual
Here are the instructions (copied from the manual)
1. Be sure the power cord is plugged into a properly grounded wall outlet. Then, press the POWER button or the remote control to turn the power on.
2. While pressing the VOL- button on the projection display, hold down the PIP button on the remote control at the same time for more than 5 seconds. (picture shown in the document).
3. When reset procedure is complete, the screen on the right will appear. (The picture of the screen says "LAMP TIME WAS RESET TO 0.")
2. Press the POWER button on the display or the remote to turn the power on.
3. While pressing the VOL- button on the projection display, hold down the PIP button on the remo
Linear Mode
