8 years ago, I was working as a customer support & service technician for an
online computer retailer.
One day, a customer rang up asking why their new computer was smoking.
Before I continue, some details, I am in New Zealand, we have a 240 Volt AC power
supply, the computer was mabe by an international american company, who like a
lot of international electronics makers, normally use power supplies that either
autosense or have a switch to select between American 110-120 Volts to our
220-240 Volts. These power supplies also come with large in-the-way Warning
stickers about checking the voltage.
I had to ask the customer step by step what they did when they unpacked their
He had seen the stick, had removed the sticker, ignored the warning sticker, and
preceded to plug in the power, without checking or noticing that the power supply
was still set on 110-120 Volts.
I then politely put him on hold stating I would have to talk to my supervisor/
accountant. This being because the customer in ignoring the sticker, had voided
his warranty. After he was on hold, I let out my own laughter, checked with the
accountant too see what sort of deal we could do for the customer (repair and
supply replacement power supply at cost), all before I explained to the customer
what was up.
Going back to the customer, I explained he had voided the warranty, and the deal
we were willing to make to make them our customer happy. They weren't happy,
(gee I wonder why). The call ended with me advising them of local service agents
they will only tell them the same thing I had.
Moral, read and do what warnings labels state.