BANTAM BC6 PROBLEM !!

[duckmansweb]

hey , i have a Bantam BC6 , and when i am balancing my 2200Mah 4S lipos in balance mode , the charger used to make a auidable beep beep noise at the end of the balance charge , but now when it completes the balance charge it just makes no noise and returns to the main menu , but if i charge my battery in charge mode Or fast charge etc , it will made a audible beep noise and stay at the charge menu saying "full" - "full" etc , is my chrger faulty ? or should i not be worried ?