Think mention after replacing the two duff Leds - All OK.
Seems then that the 17IPS19-5 can suss two duff Leds cutting supply to a basic 25v feed.
Checked supply voltages from the menu - Max 85v Mid 78v Min 75v - Set it to Mid so it doesn't come back for a while - Chris.
Just sorted another one, one burned and S/C Led. As it's such a pain to lift the strips, thought try Bonesys idea - Crumble the top, clean the area, remove surface covering so there's enough exposed copper. Use LMP solder and an iron bit wide enough to melt both sides at the same time and watch the new Led sink into place - Much faster with this screen, but doesn't work so easily with the ones where both sides of the Led are at the same potential for heat sinking, and the feed to the next Led is in fine print.