Welcome! Coming here is the best choice because calling a repair shop costs more money and time than you might think. We are now connected together on this convenient website. I am an experienced electronics field technician and your satisfaction is my top priority.
If you unplug the tv power cord for 4 minutes, plug it in press power button one time:
14 blinks = defective A board part number TXN/A1PEUUS ($90)
solid red = defective P board part number TXN/P1PKUUS ($140)
Use part numbers to search google for sellers. Entire back panel needs to come off to replace the board. If you are unable or unwilling to perform these operations then a repair shop should be consulted.
I am here to help you. Please reply back if you need clarification on any of the above, or even if you just want to say "thank you" :-)
In keeping with the design of this website, please be sure to click the 5 STARS or SMILEYS rating now. Doing so does NOT close the question or prevent us from continuing our conversation here. My livelihood truly does depend on your positive rating.
I understand news of a failure is upsetting but clicking the "bad/poor" rating does NOT do anything to fix your issue, nor does it issue you a refund.