No one here will be able to magically provide you an answer. You will need to do some basic investigation. The owners manual indicates that there is a external power supply, 12v 2.5 amps center positive plug, DC In. Be sure that the power supply isnt dead. They can be purchased for about $10. If you can measure the power supply see if it provides power, it may have died. Check the cord on the power supply to ensure no pets nor rodents didnt chew it. If the power supply is ok the next thing would be the off/on switch, it may have gone bad. If you can bypass the switch then try that. Did you leave it plugged into a wall socket? If so lightening strikes could have caused damage. Go first with the basic and inexpensive things, borrow a power supply and try someone else's or another one first. This would be the simplist and least expensive fix.
Here is a replacement power supply:
Buy ABLEGRID 12 Volt Power Supply - 2.5 Amp Standard (12V 2.5A DC) Adapter: AC Adapters - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
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