I have been using this helmet regularly since January 2017. I had no problems with my first purchase. Overall I am very happy with this purchase, especially for the price! However, the helmet stopped working in the last 1.5 months to date. I've reset the battery and followed all the necessary troubleshooting steps, but the lens sometimes doesn't dim at all or turns off during welding. The workaround I found is to turn the dial to the "Grind" function and set it back to the dimming level I was using. This "resets" it every time and triggers it correctly, but I can't always get it to work. It always comes back to the wrong job. It's very frustrating to strike an arc and blind yourself, or worse, go blind in the middle of a weld because the helmet won't go dark. I hope the seller will consider replacing the defective unit as I love the helmet. but this turns out to be unreliable.
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