Thanks for your reply!
I'm pretty sure powering isn't the problem over here as each column of 17 LEDs has its own power line to a main power rail. I'm gonna double check when i'm home with changing some around the columns (which is an easy task as every column has its own nice JST connector, this is done for easy replacement of faulty strips/columns during usage).
As far as i've done before all connections were really good powered with at least 4.8V at the worst points.
Power is coming from a bench lab power supply rated for 30A, currently using only ~6,5A with 170 pixels on full bright white.
I've attached a photo of the wiring setup, keep in mind this is an old photo with just several columns done yet. I'll upload a new and clearer image when i'm home this evening.
On the other forum i mentioned, one proposed to run a basic fastled sketch to eliminate any connection problems, i'm gonna do that this evening.
Thanks in advance for any other thoughts!
A.
