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Try turning the Toshiba device Off, and then pulling the power plug on it, unplug it from the power.
Then flip the power switch to On (without the device being plugged in.)
Leave it that way for a half hour or longer, then turn it Off, plug it in to power again, and turn it On. See if that relieves the problem.
Is there any diagnostic indication or code, with the 'service' light ?