• TalkBass has been independent since 1998. Add your voice.
    Create a free account to reply to discussions, view embedded media, and browse with fewer display ads.
    Join freeLog in
    Want zero display ads or expanded classifieds tools? Compare plans.

I need help... PLEASE!

Sounds like the tuner is broken to me. Many times a broken tuning machine will work up to a certain tension, and then "slip" back down when it hits a certain point in the rotation. You can often overcoming this by using a flat head screwdriver to "help" the tuner past the slipping point, but if you just bought the bass, you should try to get it fixed by the store you bought it from.
 
you said you just bought the bass. Is it new or used? and it had strings on it that were tight? If it did, its unlikely that the tuning post spontaneously broke between you changing out the strings. More likely you should recheck your work on the string.