Philips **PFL3517T.
No backlight (logo flashes for a sec then backlight goes off).
Corrupt software, complete a software upgrade.
Shine light on screen to see if set is in virgin mode, if it is then follow these instructions, if not then just follow software upgrade instructions:
Press OK button 6 times, then press DOWN once, then OK again twice. This procedure gets the TV out of virgin mode and allows a software upgrade.
Now follow these instructions to upgrade the software:
Download the software from the Philips support website
www.support.philip.com and load the autorun.upg file onto a USB memory stick.
Insert the memory stick into either USB socket on the TV and wait for 20 seconds.
Press the RIGHT button once, then press OK, then wait for 5 seconds.
Press the RIGHT button once, then press OK, and this time wait for 2 minutes.
Remove memory stick then press OK.
After a few seconds, TV should start up normally.