So I received a Duo R in the mail today, and to test it to see if it works, I decided to play Sapphire (that way, I can test both the HuCard slot and the CD function at the same time). So I popped in my Arcade Card, loaded the disc, and turned the system on. Up came the screen telling me to press run, which I did, and the disc booted up. Satisfied so far, I went into the kitchen to get something to drink.
When I came back, the screen was black, and there was a "whirring" sound coming from the Duo (the disc was spinning basically). I reset the console (using run+select) and the startup screen came up again. Once more I pressed run, and the disc began to spin... and spin, and spin, and spin... but nothing happened (I get the "please wait" message). So I tried a different CD witout the need for an Arcade Card. Same result. Also, if it matters, the lens position is all the way in the center of the disc (or, as far to the left as it can go).
Any suggestions on where to start troubleshooting? I want to try and resolve this issue myself before I send it out to someone.