The drawer on the unit won't open.

Someone needs to open the unit to see if something that does not belong got inside and to see if mechanism is functioning or not. If it does not fully load the disc it will eject it on its own.

Either the loading belt or loading gear wheels have the trouble. Sometimes the disc loading mechanism might need replacement. It won't cost mor for the mechanism. But will feel some difficulty in getting it from open electronic spare part market. it will be best to contact the authorised service center for Samsung to get it repaired.

Try to see if the drawers are blocked by something either inside or outside of the case.

Hello
There is a motor along with belt to control the disc tray for every DVD player. If this belt or motor [loading motor] has trouble, the tray won't come out or get into. Check these for perfectness.

There is a small belt under the loading tray which would have gone slack ( loose ) and the sound you hear is it slipping on the motor pulley. If you are confident you can remove the mechanism and turn it upside down and access this belt. Dismantle only if you can get the spare belt or your efforts will be in vain.

Could be a timing issue with the tray mechanism - possible that somebody has given the tray "a shove" to make it close instead of using the open/close button and has put the timing out.or a worn tray loading belt

take it back to the store or repair shop. Same thing happened to a friend and because it was new, the machine was exchanged.

To open the drawer, unplug the unit while the power is on (so that the drawer doesn't try to open on its own). Keeping the unit flat on a table, look underneath and find the small hole where you can turn the loading gear. Rotate it until the unit opens, using a standard flat screwdriver. The loading gear is a white plastic part with a slot in it. You should be able to see it rotate if you move the drawer by hand.

After manually removing the disc, turn the gear with your screwdriver until the drawer is all the way in, The gear should be able to be turned for three or four more turns when the drawer stops loading. If it doesn't, turn it a bit further unit it "pops" past one more gear notch. It should then turn freely for a few more turns, at this point you should stop. Do not force it once it stops the second time. This is the "Disc Loaded" position.

Power the unit back up and see if it loads a disc and plays correctly.

Make sure the disc is spinning. This might sound crazy but try turning the whole player upside down and see if it plays.

the drawer is not seating all the way with the disc, open to make sure nothing is blocking the disc when it slides in.