Need remote control code for concept dvp-495 DVD/CD player

SOURCE: using remote to play video DVD

You need to bypass your A/V tuner for your video connections (if possible). Plug your video directly into the TV and audio into the tuner. This will also give you a cleaner signal/picture as it does not have to processed by your tuner BEFORE it goes to your tv. Think of it as cutting out the middle man. Your tuner is best left for powering your speaker and not controlling your video despite all of the available connections in the back of it.

I would also get rid of your VHS and cassette players as they are dead technology. Clean up your system and remove the clutter. This will lessen your chance of getting interference. Good luck!!