That's very common, do you know the general why? Usually the power brick is poorly isolated and/or you have dirty electricity, it results in errors on an ongo

That's very common, do you know the general why? Usually the power brick is poorly isolated and/or you have dirty electricity, it results in errors on an ongoing basis that get logged to the small amount of onboard memory. (not usually a circular buffer.) When the errors have sufficient volume the memory fills up, and it stops working at resource exhaustion. In a real pinch, I've resolved this in some of the more milder cases by simply using one of those walmart plug timers that turns off for a few minutes in the morning when everyone is asleep.