Has anyone had trouble with these lights? I bought three in Feb. of 2017. One has failed. I didn't bother to ask if it was warranted. Probably 90 days if any warranty. I just took it apart to see if it could be fixed. There are 155 LEDs in the 4 ft length and only from # 1 to # 80 come on. I measured across # 81 using the diode position on my Fluke 73 multimeter. It showed open. I removed that diode, but from 82 to 155 still don't work. I doubt they are all tied in series, but it is impossible to tell from the back side of the strip. Voltage at the end of the strip is 55 VDC and not sure if that is correct. Of course these lights come with no manufacturer name or specs so it's just "hunt and peck" to try to do a repair. Also they are so fragile that the diode that I think was bad was totally demolished in removing it using my very small solder iron. Most likely a flow-solder job to place them originally and never intended to be repaired. So I just trashed most of it. Kept the main LED board and the power unit out of curiosity. Think I'll look for a fix on You Tube and even though it's too late to fix this one, I'd still like to know some details and specs.