Nintendo Switch gets hot after 5 minutes and the fan does not work. What can I do?

I have my Nintendo Switch while playing in handheld mode, after 5 minutes it gets hot and the fan does not work. When loading (without use), she is hot and barely identified and infected, she cools down.

what can I do?

Did you order them on the internet and bought them at a store?

I got her for her birthday but she was bought in the store.

And I already have the solution. But thanks