We have a LINEAR SERIES RV4500 radio/cd/DVD player that came with our trailer. Last night we went to watch a DVD like we normally do and the DVD player wouldn't work. Have power and radio works so it's just the DVD player. Hit the reset button and still no luck. First time we've had issues with it. I'm out of ideas so wondering if anyone has run into a similar issue and how did you fix it? Thanks in advance.