Turns out, the front panel click was coming from a small speaker. Went to the rear where the main board is put a screwdriver up to my ear and could detect a faint click from one of the relays? (open, copper wound) Pulled the relay for compressor but the board still clicked. Took a gamble with a new board and that fixed it, APPros was able to source the part locally and got it to me in a day (not counting Sun. when this happened) Thank you!