Not worth it.
They're $40 on amazon. I can't afford to spend time fixing a $40 board.
The boards that are NLA are sometimes worth repairing, but honestly, "the last guy to touched it, owns it forever" and I don't want to be getting any calls that the board I fixed so the bake element would work, now has bad touchppads that I can't get *or* fix.
If the part is available, I quote the price and if not,I tell them "sorry, the manufacturer doesn't sell that anymore". Keeps things nice and clean.