Electrical Questions? Ask an Electrician Online.
Hi, I'm Mike G and I'll be assisting you. More than likely you only need a lamp replacement. Remove the head and take it to one of the home centers for a replacement lamp.
Look at the face of the lamp. The wire ring is what hold the lamp in. Push the ends together and the lamp will drop and you can unplug it. It looks like a MR16 lamp available at any home center or Ace hardware.
It looks like so many others that are made in China. Don't why you need a manual when I told you how to replace the lamp. It could very well be a Hampton Bay or a Harbor Breeze. Sold by Home Depot and Lowe's. If you Google "MR16 led lamp" you'll see the replacement which fits every fixture of that type.