Hello. Thank you for coming to JustAnswer.
Sorry for the wait. My name is Michael. I will be helping you with your question today.
My first suggestion is to leave it unplugged from power for at least a couple of hours - that will give the electronics time to completely dissapate. Then plug it in and try again. Are there any errors displayed?
I've tried to find a service manual for you, but because of the age of the device, it's not available electronically.