Changed my digitizer in my s4, then had a problem saying the battery temp was too low so it couldn't charge. Googled the issue and multiple posts said the flexi cable may be damaged, so I bought a new one. put it in and now my phones completely dead. Even when plugged into the AC I don't get the red charging light. Any idea what's wrong with it. Bare it mind the phone was switching on 3 days before I got the flexi cable replacement?