500 watt front hub motor, 11AH battery ridden for approximately 1 1/2 years working normally. All of a sudden after sitting unused for 2 weeks with a fresh charge on the battery, the KT-LCD1 display started coming on then immediately going off. Then after turning battery switch off and back on the same thing happens. Is it time to get a new display or should I look for another cause? Anyone had a similar problem?