Phantom 3 adv gimbal gone crazy after repair

Hi, the roll arm and yaw arm was broken and the phantom gimbal was in an angle, but still works fine. After I replaced the roll arm and yaw arm, when I turn on the phantom, the gimbal spin crazy. And there is no signal and video feed, but the remote is connected to the phantom. The red led on the battery also blink awhile before it fully shut down when I tried to shut it down. Anyone have same problem or I have to replace the cable?