Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I thought this was a great purchase until....

I loved my emjoi for the first 3 months until it stopped turning on while plugged into the wall. I have the corded/cordless combo unit and now it only works when the unit is not plugged in.This makes it extremely difficult to epilate as the unit never has enough strength when not plugged in to do an adequate hair removal job.Now I also don't know who to contact about a warranty, etc.Might have been a 4.5/5, but now I'm thinking this machine is more like a 2/5.