I am burning in all my SS's and I am finding failing nodes. One string in particular surfaced immediately with problems and leaves me scratching my head. I am looking for suggestions on how to locate the problem nodes.
First I have changed out all the 330 ohm resistors with 150 ohm resistors and I am using the test firmware.
The string is a 128 node string. When power is applied the SS starts out red, green, blue and white and after one or two cycles the string begins to act erratically. As the nodes cycle through the 4 colors a random number of nodes throughout the string turn red, green, blue, orange, yellow, purple and all colors in between at the same time; the nodes are not in color groups but individual nodes - no pattern - all random. As the test cycle continues the entire string will all turn blue, green and white sometimes locking at white for a few cycles. Then it will start cycling again but the color results of all the nodes are random.
I am just going to keep power applied and see what happens.
I think what I am seeing is caused thermally in various nodes. Any ideas on the best way to attack this problem?
Pete