The problem is pretty rare - the powerconnectors aren't *that* unreliable! As rob says, use of non-specified AC adapters may cause the problem, but all the ones we replace are replaced with a different brand of connector which appears to be more resilient - I don't remember ever having to change one which had already been changed.

Obviously, if this is the 3rd time you've seen this, I must have - either that or the problem one of the previous times was due to a different issue (this can happen if you plug an AC as opposed to DC adapter into the unit).

Hugo