APC have been bought over by Schneider.
Correct!
And, that's the point where the famous APC UPS workhorses begun to pant and puff...
APC were a cheap option well before Schneider got anywhere near them. In the early to mid 90s they were the world's largest UPS company, but like many companies they got there through superior marketing and not superior engineering.
As to the early failure, for that style of UPS the factory would be working on something like 4% DoA (dead on arrival) figure and would be budgeting for a failure rate in that ball park. So no great surprise that you get a dud.
Though BradC has beaten me to it, these are my thoughts:
APC products were never were the Holly Grail (or whatever!) of the UPS units available in the market; they were afordable, yet
reliable UPS machines; they were
honest devices, delivering [more than] every single inch they promised to do. Yet, nowadays they seem not to be of this kind, any more...
Personally I am who I am ONLY because, in my share of the market, I have the name of
the one who always delivers; I have alayws had a
good reputation; a positive NAME in my share of the market. This is what APC has lost after their aquisition by Schneider Electric; this is what Tektronix lost after their aquisition by the Danaher Group; et cetera...
So, where does this marketing acquisition scheme of trashing any previously good products lead us?
-George