PS3 Not reading disks

My PS3 all of a sudden has started to read disks, when I put a disk in the ring in the top right keeps on spinning. I did the thing where you go into the recovery menu and rebuild database and stuff and its not working so I opened it up and found out the drive isn't even spinning the disk. I think there might be a problem with the laser, its probably brunet out and its unable to detect the disk. I am about to buy a new laser but not sure which one to buy. The model on the mech says KEM410ACA and searching this on google brings up mechanisms and they come with the lase KES410ACA so I assume a KES410ACA laser fits in to this mechanism, is this correct?