Wahl Home Pro Basic hair clippers not working

[treezleef]

Hi,
My Wahl Home Pro corded hair clipper has stopped working......3A fuse is still good. No sound, no movement , no nothing.......i took the blade off and cleaned some hair out but still no good.
I cant take the back off as the screw is a "triangle head" one......like a Tork but its triangle.

I only bought it in 2021...when covid was in. I only used it a few times, then it failed when i tried to use it again.

Do you know how i can fix?....or where i can get those triangle screw drivers?

Pics attached

 

[Avo Mk8]

 

[treezleef]

Thanks...got the screw off...used a flat-head screwdriver.....now try to see why not work.
I cant buzz out the coil as all contacts to it are sealed.......i guess i can pick off some of the plasticcy sealant and then see.....theres some more screws inside so ill see about removing them to see if i can get onto any contacts so that i can buzz out all the connections.