My theater room is pretty dark during the day. Of particular relevance here, it's too dark to see the keys on my slide remote very well. However, the backlight will not turn on. I had to go into an almost pitch black room to confirm that the backlight was even working. Couple questions: 1) I assume there's no way to make the backlight come on sooner by adjusting the threshold or anything; 2) can I cover up the light sensor to get the backlight to come on and, if so, where is it? Thanks.