how to remove unscrewable screw?

[paparazzo79]

Ok guys,the laptop is Lenovo Yoga 2 Pro.
It had hinge problems so guy repaired it,and we change the back cover becase the top left part was broken.
But back then the repair guy on local service (whom I don't talk now) did some weird thing.
Dunno if he glued the screw onto the chasis but I can not unscrew this screw no matter how much torque I apply.
So what to do now?
The back is from plastic and it can be easily broken.

[Sametbey]

Re: how to remove unscrewable screw?

with the appropriate diameter drill, you can break the screw head. then you can remove the remaining body with pliers. good work.

[paparazzo79]

Re: how to remove unscrewable screw?

with the appropriate diameter drill, you can break the screw head. then you can remove the remaining body with pliers. good work.

Yeah but I can break thje hole where screw goes too,right?
You mean just to drill the top/head of the screw?
That would be tricky since I don't know how long to drill.

[petehall347]

Re: how to remove unscrewable screw?

you could try warming it with your soldering iron but not enough to melt plastic .just to soften the glue .

[tomrlopes]

Re: how to remove unscrewable screw?

Yeah but I can break thje hole where screw goes too,right?
You mean just to drill the top/head of the screw?
That would be tricky since I don't know how long to drill.

According to the service manual the screw is M2 x 5mm

https://cdn.badcaps-static.com/pdfs/...a86552fd0f.pdf

Use a 2mm bit and drill the center of the screw head until it falls off.
Then once you have the bottom cover off you remove the remaining screw shaft. (maybe use side cutters, but don't squeeze too hard)

Another way: cut a slot in the screw head with a Dremel, then use a slotted screwdriver. (I once screwed myself by putting Loctite red on the hinge screw. Used Dremel 9909 bit)

[paparazzo79]

Re: how to remove unscrewable screw?

According to the service manual the screw is M2 x 5mm

https://cdn.badcaps-static.com/pdfs/...a86552fd0f.pdf

Use a 2mm bit and drill the center of the screw head until it falls off.
Then once you have the bottom cover off you remove the remaining screw shaft. (maybe use side cutters, but don't squeeze too hard)

Another way: cut a slot in the screw head with a Dremel, then use a slotted screwdriver. (I once screwed myself by putting Loctite red on the hinge screw. Used Dremel 9909 bit)

Yeah just to get 2 mm bit and drill special for such small bits.
I'm not a driller I'm a PC built technician in my free time,and my brain is f..ed up from terrible disease.

[petehall347]

Re: how to remove unscrewable screw?

use a reverse drill bit if you can find one