Well, as for "next time tactics"... someone else suggested using the reset button on the back. Now, I do not know how much of a hard reset that button will do (it has been said it just does a hard power down, nothing else). But still worth a try at a low cost :-)
I strongly think now that powering off for an EXTENDED time (e.g. overnight) might help, with all that low current circuitry and capacitors involved.
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