DS2 broke lose on a second 289 of mine now. At this point if your using your 189/289 in the field, aka banging around, rare drops from 10' ladder (or more $hit happens), etc, that LED seems to be a pain point. The damn thing is a door stop if this detection fails.
Couldn't source the LED from the video above in a reasonable time frame / hassle. Digikey part # 754-1435-1, manufacture part # APT2012F3C seems to work. This guy is my daily driver so if that fails, I'll report back.
This LED and the lead detection problem really seems like a poor design unless its bench princess. The meter is totally useless if the lead detection fails. How the hell this 0805 led breaks loose before something like the IR detectors that is beyond me. Love the meter, but its not as robust as other Flukes I have had. Sadly, I love it...and will keep replacing with 189s. Least until I must bow to the safety nuts and piss around with wireless measurement.