Have TV Questions? Ask a TV Technician
Hello and sorry you're having problems. Offhand these symptoms are not within normal operation of the set and actually indicate a premature hardware fault in the set (even though I realize the TV is brand new).
The solution ultimately here is to return the set for an exchange if possible, and if not- it will require warranty repairs through Panasonic as there is an out of spec component causing the set to cycle itself off.
However it's worth it to try a hard reset, as sometimes the processor in the TV can simply have locked up.
The first thing you would try, is disconnect the set from power, then press and hold the power button on the TV itself (not the remote), for 10 seconds and release. Then plug the set back in, and also check that the power cord is connected tight at the TV as well. Press power once, and see if the set powers up normally and stays on. Try this procedure up to 3 times, and please let me know what happens.
Beyond those steps above, this indicates a hardware failure in the set, and there are no pushbutton fixes for this. The TV will NEVER shut itself off within any normal operational mode. Given that, if the reboot above does not work then the TV should be exchanged through the retailer, or if that is simply not possible then Panasonic would need to be contacted to setup a repair ticket on the set.
I'm sorry to hear that, there isn't any way to force the set to stay on- if it's shutting off it's because the TV is faulty, components are not staying stable while the set is on and are causing ti to shut down.
You would need to contact Panasonic along with proof of purchase of the set and have it repaired by them I'm afraid. Your most common culprit for this issue is a premature failure of the power supply board:
Other than that, I'm sorry for the bad news and wish there were a quick fix.
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Use the link above to contact a Panasonic France service center.
Or you can contact the Panasonic England help line (LINK below) and have them transfer you over to the French repair servicers:
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