And if you open it up it probably just a loose connection i never checked. Works good in my 4x8 tent I use them both. The item "1800 watt cob led grow light full spectrum" is in sale since Wednesday, March 20, 2019.This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Gardening Supplies\Hydroponics & Seed Starting\Grow Light Kits". The seller is "dollainc09" and is located in Laurel, Delaware. This item can be shipped to United States.