How to remove T5 Socket from ATI Dimmable?

[BurgerFish]

I need to replace it. No idea how to remove.

Can somebody help me?

Thanks

 

[BiGGiePauls33]

Although this is to replace a ballast, it shows how to disassemble the light fixture. I'm sure you can figure it out from there.

 

[BurgerFish]

Can rusted sockets be the reason, why the bulbs are not bright (even new bulbs)?