MAN TGX 26.440 12V socket Question

My 12v socket has decided to call it a day, I can’t seem to find a fuse to check, can any of you good folk help?, both ciggy lighter 24v and Hella 24v are working fine.
Thanks

fuse box is on the passenger side, iirc you lift one part of the dash up and then pull the lower part out.

viewtopic.php?f=2&t=81431

might help