When any of your file is lost from the Mac system then you would be dependent on the time machine to get your file back but what if the time machine is not working then you must be thinking to Repair Apple Time Machine. First of all the data can be lost because of accidental deletion, transfer error, the files can even get corrupted. The time machine backup is not working may be because it is not properly connected or if the time capsule where the copy of files are saved is not responding then you will have to Repair Apple Time Machine. You can also look for any of your personal backup source. When none of the backup is working then you can use the Mac data recovery software that will scan the Mac hard drive for the corrupted and deleted files which will then appear in the preview. You can select the files you need for recovery and restore them. However you can try to Repair Apple Time Machine with the help of any professional. You can download the software and get your files back in any condition.