Fixing Tektro M275/T275

[JackStraw]

Hi All,
Does anyone know how to fix it?
I know that there is a video how to bleed the Tektro but this does not work in my case.
The video
View: https://www.youtube.com/watch?v=5F3PXnyhF5U
is about front brake but mine is the rear one.

Do I really have to take the brake off to bleed it? I don't need to change the pads.
I tried to bleed it in place basically remove the bubbles if any.

It does not look like there is any air but the brake itself is dead, no resistance whatsoever.
When pushing the mineral oil from one syringe to the other I have noticed that if I press too hard the mineral oil starts weeping under the plastic cover (marked in red on the picture). I haven't touched this cover or taken it off just the larger refilling screw.

Please advise.
Thank you.

 

[N0bodyOfTheGoat]

Iirc it's M275s on my '20 Voodoo Marasa, it's not had much use in nearly two years, but I've no idea which replacement pads to buy.

Anyone know?

 

[JackStraw]

from what I can see this weeping is not an issue. If too much oil pressure is applied from the syringe it will weep.
I think I managed but I need some better torx tools because the one I have seems too soft I has twisted it inside the screw.
Got a replacement calliper so I replaced it rather than destroying that bleed screw completely.