useful Documentation for Troubleshooting

LED drivers:

for test: change the 47kOhm (R9,R10,R11,R12, R13, R14,R1 to 4k7

LED drivers:

with kindful regards to http://www.tauntek.com

LED Driver sections, in case you have trouble with the LED chains

S/H section routing

from rev.1 - routing sample/hold - please remember rev.1 is different