I am new to pixels, so not sure how to proceed. I have tested about 20 Paul Zhang 12v ws2811 100ct resistor strings and this is the first one with a problem. The first 20 pixels respond correctly, then it repeats red, green, blue, white, dead for the last 80. I turned off test mode in FPP and the first 20 went off, rest stayed on with the same pattern, almost I did get some purple. Powered down Kulp16 and when back on now only first 20 pixels respond. Tried another string on same port and port is fine. Any ideas on whats wrong? If its just a bad pixel I'll cut it out instead of the hassle of getting one string replaced.

thanks

Bob