fluorescent light repair

Solder crack found at the back of L1.

Iguess L1 is the AC line noise choke.

This fluorescent light has been used at the ceiling of the stair ways over 15 years. Its been made big beep sound while light is ON. The L1 wire looked not so tight so L1's noise/vibration could be the source of this crack.

Resoldering could solve the problem temporary.

It is still beeping then soon the same will happen.