shark is notorious for placing screws in odd places. look at the mini roller glides on each end at front ( one on each side of the front ) usually one under each of those, usually on the sharks is an item looks like it can be popped off or removed, then there most likely is a screw there.
im not familiar with that brand but i am an electrician and vac tech. i would if i were you i would check and make sure the heating element had power at its connection. if there is power replace the heating element. plenty of online vac parts stores have schematics along with a parts list to help you locate part in vacuum.
AS far as I am aware and I have been in the trade for many years, there are limited spares for the Shark range and no schematics or diagrams due to their policy.
If it fails under warranty, they replace it, they don't attempt to repair them because it is not cost effective.
They are all called 'Navigator' :>D
https://www.google.com/search?q=Shark+Navigator
When switch to carpet, the difference is that the brush roller turns. When it is on hard floors setting it doesn't. Remove the base plate, remove the brush and the belt. There is likely something wrapped around the drive spindle or clutch.
Question edited for clarity and correct name of the vacuum.
Where is the shark vacuum brush bar reset button? You can find the shark brush-bar reset button on the underside of the vacuum.
Jul 12, 2020