I used two grubbers. It worked well except for the slight slowness (0.2 to 0.3). Touching the settings to adjust the slowness. When the first product suddenly turns off the TV, LED does not turn off and turns on rainbow color. In the past, when I turned off the TV, the LED was turned off as well. The second product also works with the first product... Suddenly there is no response. What's the problem? Did I touch something wrong? Or do you have any product recommendations? I'd appreciate your help.