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Why is the tv clicking repeatedly when plugged in and unresponsive?

Why is the tv clicking repeatedly when plugged in and unresponsive?

Panasonic TC-P65VT50 Plasma clicks repeatedly when plugged in and is unresponsive. Unplugging for extended period of time, plugging back in does not have an impact. Attempting to hold the power button down to reset seems to interrupt the clicking, but then just starts in again. Sounds like when turning the TV on and off but it cycles very quickly and repeatedly.

ANSWERS:

"@ldrinka

the clicking you hear is most likely based on the relays on the power board. You need to remove the back from your TV and take a look at the boards. Post some pictures of those boards with your question, that way we can see what you see. For as long as you do not decide to touch things while trying to turn the TV on etc., you are safe to work on it. Right now, going by your description and because there is no blink code, it does sound like a failed power board.

Adding images to an existing question

Update (10/07/2018)

It is possible that this is a Sub P board issue. You would need to measure the voltages on both the power boards and the fuses. I attached a legend to your image so that we can all talk about the boards knowing which once they are. Again, since your TV does not even create a blink code error, my first suspect is the power board(s) P and subP"

This sounds most likely to be a power converter failure often this is the unit generating heat and clicking in the area where the power cord enters the back of the unit. This would be something that is best left to a pro because capacitors that are inside of these units can store a sufficient charge (for days, weeks, or longer) to cause permanent injury if you should unwittingly make contact with the wrong component or contact particularly if one has been shorted or otherwise damaged.

Thank you all for the feedback and advice yes it would be great if someone can explain how to properly discharge the capacitor?? As I would like to fix it myself I'm comfortable around live electrical components not a complete novice, so any more input would be greatly appreciated thank you guys!!

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