Patio Door Rollers Broken

Your door is a old aluminum type with the thck glass, weighs a ton.
Once roller assembly is corroded ,it is very difficult to remove, had same door at previous place, gave up & replaced patio door in the end.
Pretty sure it CA865 Sliding Patio Door Roller Wheels is the part.

http://www.windowrepairshop.co.uk/CA865-Sliding-Patio-Door-Roller-Wheels-38mm

 

I couldn't get them out, totally corroded in, I ended up damaging the recess / frame, so I replaced patio doors with new lighter model, which also had better locking system, the old patio door had a little lever on lock/handle inside you flicked to lock doors, it was a bit iffy & not secure.
Alway found the old rollers would get jammed with crud which collect in the track.

 

Point of no return.

Sounds like you have got to be prepared to butcher it out, hoping for not too much damage, and then hope you can repair.

Not a job to be up against the clock with.

 

First try an impact driver to release the screws.

If this fails, your only other solution would I think be to drill out that screw, tap out the hole and fit a slightly larger on on refit.

You might be lucky - if you are extremely careful and use top-quality drill bits - and manage to drill out the shaft of that screw leaving only the embedded thread which can then be removed using a tap, so's you could use the same size screws again.

There's a chance that the X of the screwhead will guide your drill right down the middle, but use the best bits - not sure what they are tho'...

 

He can remove the screws,if you read OP's post,put your specs on might be clearer, it's the actual roller assembly which is hard/impossible to remove.
The roller assembly goes in at a slight angle at first, then drops into place & secure wuth the two screws.