I have a 4.5m, 60led/m Ws2812b strip, hooked up on a raspberry pi running hyperbian.
Raspberry works on its own psu, and I have a meanwell 5v 18a for the leds with common grounds.
The setup was working great for some time until I decided to inject power at the end of the strip as it had some dfferences on high brightness whites.
I soldered the extra 5v and ground at the end of the strip and it worked wonderfully.
While trying to cable manage, the 5v+ wire got loose and short-circuited something. Probably the signal line?
I should note that the end of the strip is very close to the start, so that loose 5v could have touched anything.
Since then I cannot get the leds to work.
I multimetered along the strip, it seems to have a constant ~5v power everywhere.
I have tried a second raspberry pi (in case I fried the gpios on the first one) but I get the same behavior from the second rpi too
What are the steps to figure out if it's fried or if it's repairable?