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Hi there and welcome
Remove the power connection from the power socket and then hold the power button in for 60 seconds and then release to remove all residue power.
Once done, connect the power back and then try to turn it on.
Let me know if it then starts please.
It is or a mainboard problem. Can't tell without it being tested
How old is the device?
ok, it is a hardware problem, can be due to corrosion and a blown capacitor with it not being used do long. Even with it being in the plastic.
But it will be out of warranty and five years is too long, though under $100 is pretty good.
But your going to have to replace it. Repairing these is not economically feasible anymore.
I saw one for $150 though for replaceemt here
But whenever you buy electronics, even if you do not intend to use it straight away, always test it to be sure its ok so you can still contact the seller in time and get it replaced.