Hey guys I can’t figure this out for the life of me so I joined to ask for some help. When I turn my phantom 4 controller on it just blinks red. It has a full charge but acts dead. I have literally tried/read everything I can to fix the problem and I can’t. I also Can’t send it in to dji because it is modded. From what I reasearched it sounds like a battery issue. So I buy a brand new controller and it works Perfect. Now I swap the batteries and BOOM. Now both controllers have the issue. WTF!! Any ideas are greatly appreciated. Thanks