Panasonic pt-60lc14 TV

Presumably you have consulted the troubleshooting guide on p83 of the operator's guide (http://service.us.panasonic.com/OPERMANPDF/PT43LC14.PDF) ?
None of the problems listed there are an exact match for your description, and some of the 'solutions' are not what you want to hear (return to a dealer or Panasonic service centre), but it might give you some ideas.
You might try contacting Panasonic directly for advice describing the symptoms: they ought to be able to at least tell you what the flashing light codes mean.
You might also try getting hold of the Service manual for your TV which might describe the problem more accurately than the operator's guide. see eg http://servicemanualrepairs.com/book/panasonic-pt-50lc14-60lc14-43lc14-service-manual-repair-guide/ (purchase option. There is more than one manual available, and they cover more than one product, but they include the 60" model) This seems to be a free download. the download link is apparently in quite small (ordinary) print. Watch out for advertising/download managers/unwanted software etc.

16.January.2016

The temperature sensor has failed its either shorted or open which will cause the 3 blink error

i used to be a tv technician.it sounds like an intermitent fault,which only does it sometimes.most likely cause is dry joints on circuit board,which is faded or discoloureded solder.try resoldering dry joints ,faded or discoloured solder on circuit board.as its an intermitent problem so it sounds like dry joints on circuit board which is faded solder,which means only half of the current is passing through the circuit..resoldering will allow the full current to go through circuit.

Check your remote it may be in a different mode or your wires or cables maybe disconnected also sounds like your auto shut off has been activated

your bulb is burnt out,have to order new one, big problem alot for me anyway

PT-43LC14/PT-50LC14/PT-60LC14.
1) Make sure the TV is on.
2) While pressing and holding down VOL DOWN button on the TV, press and hold down SPLIT PLAY button on the remote until a message appears on the screen that the lamp timer has been reset.

Good luck
Note: I got it from here: http://www.dlplampguide.com/tyla1000.html

Might be the ballast not letting your lamp turn on. This part has a history of going out. part nubmer is LSEB3131A.

Check this...

www.911phone.net/Panasonic_TY-LA1000_Instruction_Manual%5B2%5D.pdf