This guy will sell you something that works when you buy it. Inevitably as happens when you buy used products, things breakdown. Instead of replacing it when he clearly knows that repairing it will not work, he will continue to send a "repairman" out to your home to put a bandaid on the problem until the 90-day so called warranty expires. He does not stand behind his product and he will not listen to you if you try to work with him on the issue.