JWST was never designed to be serviceable, because it's so far away[0]. It would probably be possibe to get a crew to L2 with our new SLS/Orion capability (with

JWST was never designed to be serviceable, because it's so far away[0]. It would probably be possibe to get a crew to L2 with our new SLS/Orion capability (with costly modifications)[1], but I don't think this was really anticipated back when JWST was designed. And once they get there, effecting a repair would be the equivalent of patching an executable with no source code, in production. [0]: https://jwst.nasa.gov/content/forScientists/faqScientists.html#astronauts https://jwst.nasa.gov/content/forScientists/faqScientists.ht... [1]: https://www.researchgate.net/figure/The-crew-segment-of-the-L2-Farside-mission-can-be-performed-using-a-single-SLS-along_fig4_233409383 https://www.researchgate.net/figure/The-crew-segment-of-the-...