Instruct: Classify a given Amazon review as either positive or negative.
Query: Enermax Banned

You get what you pay for. Amazon, UNIXSurplus, and United Parcel did a good job in getting this item to me. Enermax however has a horrible history in quality control. I assumed my old power supply was bad and replaced it like for like with this item. Item would not power up the motherboard. I assumed I had other issues and trouble shot everything at significant expense. Two days later went to a PC repair shop with the item and had it checked. Result was unstable output voltages. Thanked the guy and bought one of his favorite power supplies. It lit the motherboard and drives immediately. PC repair guy said Enermax has been banned from his shop and vendors he works with. I will do the same. Not worth the trouble to try and refund or replace. Out enough money and time already.