Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Useless piece of junk

I am from the UK and live in the USA now, I have some items like a video machine, a power screwdriver charger and a small Hi Fi that need a 220 volt supply, I bought this transformer and it does not work, the lights come on but no power to the appliances - I sent it back and a new one was delivered 2 weeks later and this wont work either.