PC-CTB16PC Channels not working.

I've got the basic LOR AC controller....got it prebuilt in the plastic enclosure a couple of years ago.


However, recently it hasn't outputs 6 + 7 have been giving me nothing. Every other output works and fuses are all ok.


I'm thinking its the TRIAC for 6 + 7, but they look ok...no smoke signs or anything like when I've killed the DC ones. All the quick connects are properly plugged in.


Are there any other reasons that two outputs would not be working?


Thanks