Disclaimer: I am not familiar with electronics repair, I’m just out of ideas for how to replace these apparently very particular LEDs.
The only information I have is that it was a Philips light string (I have already tried reaching out to them, but the product is too old). It uses LEDs that project the colored light onto nearby walls. Model number for the string is TOL-60L/2WB-LEG. info tag on the cord says to only replace with 4v LEDs, and light specs on the tag are 120v/60hz 0.046A. Have tried replacing with generic LEDs, brightness difference is extremely noticeable, no projection of color. Tried searching the discrete led indication database here, nothing seems to match.
Would appreciate any help, would very much like to keep these light strings running for many years to come.