Drive does not opens even when the button is pressed number of times.

Check how well it is sitting in the slot.Many times the slot is too tight and this often gives problems to the floppy drive and CD Rom.This leads to mechanical stress. Relieve this stress and it will easily open.Hope this helps in solving your problem.
N.Govind

Hello,

One of the things that I have noticed about these drives have been the complications that will be experienced with the tray motor assembly. Often the gears on the tray that connect to the motor become worn from jamming and use. Another problem that takes place is that the tray never returns to the proper position once the disk is inserted.
I would like to know the age of the drive since the MTBF is only 70000poh