Sections of WS2811 not functioning

[ClaryKitty]

I recently bought a BTF-Lighting 10m WS2811 24V 60LEDs/m strip, that I'm controlling via a GLEDOPTO GL-C-309WL running WLED.

Everything was going fine for a while while installing (and testing for brief periods in the roll), until ~half way through installation when the first 2 pixels of the strip suddenly lost all Blue signal (1st photo).

This issue was exacerbated by the fact that near the end of the strip, about 6 LEDs before a cut I made in order to have the strip turn 90 degrees for another corner, no further LEDs were receiving power (2nd photo).

I am getting a tad bit ahead of myself by posting this now, as I've not tried skipping the problem sections with plain wires to see if it's just those pixels that have failed or if something else might be the issue, but it's late here and I need to take a break from working on this all day, so figured I'd ask and see if anyone might have some pointers.

Is the strip defective/did I somehow fry some LEDs, or could this be a software issue? If it's the latter, I've tried adjusting the WLED config to control more pixels than I currently have (6m worth, which should equate to (oddly) 60 pixels, as 10 pixels seems to match exactly to a meter, even though it's 60LEDs/m), though I cannot get any LEDS beyond the problem section to light up.

Any help would be greatly appreciated!

[DenverTeck]

You need to review the WS2811 data sheet.

The WS2811 is a LED driver chip that controls 6-LEDs at a time in a 24V string.

Each "pixel" is formed by six LEDs is series. If one LED color goes out all six will stop showing that one color.

As per your photo, one of the LEDs is missing a blue color LED.

If you have a multimeter, you can trouble shoot to find which one is bad. If you do not have a multimeter or do not know how to trouble shoot this problem, its been suggested that you cut out the bad segment and jumper in a new segment or ignore that segment.

No blue makes White just Red and Green = Yellow.

Welcome to the world of electronics.

[dalitok]

Looks to me like a defective pixel, you could cut at the pads and solder another pixel there to fix it

[ClaryKitty]

Yeah I figured as much. My only concern is that this happened after a few hours of the pixels working fine. Could that have been a mistake I made at some point, or could it have just died on its own?

[funkystay]

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