This is a discussion on How to dim blue light on DVR? within the DirecTV forums, part of the Cable and Satellite Providers category.
Press the left & right arrow buttons all at the same time on the front of your DVR. There are four levels of brightness that you can adjust which go from very light to very bright.
This is a common complaint on Blu-rays, tuners, etc. Not a big problem, but its very annoying.
If it's a blue light, you can dim it considerably by using clear red tape over the LED, if you can find it. You could also use Automotive Lens Repair Tape.
Assuming that your electronics are black, and if you don't care if the light is visible - Black electrical tape.
lol, in all serious, my first reply has the actual way to dim the LED lights on the OP's DVR for DirecTV.