Thanks to Kelson and wajo for suggestions re: the 3575 and 3576 dark tuner syndrome. I'll try those ideas and see what happens. My TV is a 1080 rez, and I have the 3576 setup to match. But, keep in mind that DVD's all play with correct contrast that matches broadcast black level (I'm an antenna guy--free TV is my signal source), it's only reception through the 3576's tuner that has dark, crushed black levels, whether viewed on HDMI or component connection. So, then that low level gets passed along to the HDD where playback looks just as bad. Presumably, any DVD's burned from that will also have the same ailment. But again, commercial DVD's present a perfect video level, whether played through HDMI or component. I don't see how trying a composite connection could fix the low-level tuner, but I'll certainly try it and see what happens. Thanks again to those who offered their input. I'll keep looking for a tuner software fix, too.