<<< I noticed a few times during cycles that the countdown display would be blank.>>>

***********************

Possibly a failed DISPLAY BOARD.

http://www.repaircli...6870701/1369223

Verify first---that the plug connections *behind* the jog dial are not loose or that the wires are not chaffed.

To access these wires---unplug the washer and remove the top cover (of the washer).

Source: LG WM2455HG Front Load Washer