Tevion 1501 recorder. Why cant i open the tray?

Hi, I have a Tevion 1501 dvd recorder that recently when i put a disc in,went through the start up mode but nothing happened,I left it for 5 mins. When nothing happened i had to remove the disc by taking the cover off and take the disc out by hand,because the eject button would not work. Now the machine comes on but a,the tray wont open and b.now nothing happens when you press the open tray button