The Streaming Stick+ may also run on the USB power from the TV, but I never recommend that, as many times the TV USB doesn't have proper wattage to work properly. It may get you by until the power adapter is replaced.
DBDukes Roku Community Streaming Expert Note: I am not a Roku employee.
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Re: Help quick question do need to repurchase or just the box
If you still have the cable that plugs into the stick you may just need to get a USB power adapter. You probably have one lying around that you're not using. Just make sure you look at the fine print on it. Its output should be at least 1A (higher is better).
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