Hello I have tried to troubleshoot this board but got lost.
I am running 6 renss16 boards everything has been working good for the last week or so since setup.
we ran 32 channels last year and now went to 96
But the other night this board quit working completely so I brought it inside thinking moisture let it dry overnight. now 1-8 seem to work but 9-16 not.
I reflashed the second pic still the same so I switched them still the same.
Swapped u4 and u5 no effect.
Jumper wire on u7 pin 3 to 14 and channel 9 works pin 13 to 14 got channel 10
Then trouble shooter said return to previous spot this is where I get lost.
Forgot to mention d.v.m. show between 14 and 17 volts A.C. at channels 9-16 terminal blocks
P.S. Having trouble with one other board also but has to do with a dim channel staying on but one problem at a time so I will be back later if I cannot get it either this is our third year no problems the first two years, maybe bigger is not always better