We have a RCA Guide Plus gold gemstar TV, built in DVD. Its about 3 years old. For some reason, that I cannot figure out, the display is very dark when we play DVDs. No problem when watching regular programming. I've read the manual and adjusted screen display in the menue, but no luck. Does anyone have any ideas? For the person who can help solve this problem, you will have my every loyalty (and my childrens).