From your description, it seems that there is something wrong with the power adapter. It is best not to use this power adapter to charge the battery or provide power through the camera... The connecting cable is a little damaged, but it’s not a big problem. , if it is not broken, just wrap it with tape. If you use batteries to take pictures and still have such problems, there may be a problem with the CCD or the internal circuit and need to be sent for repair.