Have a channel that was staying on, now it sometimes stays on.
I thought I had read somewhere that if you pull the opto and it stays on it is the triac. If it goes off it is the opto. I can't find where I read that and as I think more about this maybe that doesn't even make sense.
I know people just say switch with another chip and if it start working then it was the opto, and maybe that is the only test to determine which one it is?
Thanks,
Dan