We have an install base of about 120 TWIDO PLCs anywhere from 1 to 10 years old with varying configurations, but all using the TWDLCAE40DRF base unit. Lately (over the past couple of years), we've had multiple instances where upon power being removed from the device, and then turned back on, the base unit fails and will not power back up. The typical case is that we turn on the power, a couple of LEDs flash for a brief (< 1 Sec) moment, and then nothing - unit is dead.
Just wondering if anyone else has encountered the same thing.