My Brother 270SE has an encased LED. It was my daily driver for years, and eventually the LED light dimmed so much I could barely see. I could not figure out how to remove the bulb for replacement, so I took it to an authorized dealer. He said it was not replaceable. Brother considers that machine a "disposable" machine, so when the light burns out, you just buy a new machine.
Um, no. Not THIS girl, not THAT machine. It's a great little machine, perfect for classes and retreats, still running strong. I'm not going to dump it just because the light is dim. Silly, silly engineers.
So I went to IKEA and bought a $10 Jansjo light. Actually, I liked it so much I bought five. Three for me, one for my mom, and one for my friend Cindi. They also have clamp-on and floor models.