Back Up Cam / Car DVD Player (turns on but doesnt seem to work)

Misc stuffs for free (maybe you can make them work or for parts) Back up camera (wireless) - used to work. but monitor started not to communicate with the camera. Both camera and monitor still turns on. Missing 12V adapter but you can use any 12 V adapter. RCA 9 inch Monitor DVD player. no cables / power adapter (i had.to repurpose the adapter to a different use thus not included). This turns on as well but is not reading discs. Maybe you can fix or repurpose the monitor. Some old powerbanks (untested).