@domh96 , Dom, Try another set of good batteries inserted properly, check and clean battery terminals to ensure that are getting good connection. You said you had the unit disassemble, could you have pinched/ broke a wire for battery terminal, disassemble and check connections. Additional info. at trouble shooting link below. Good luck.
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@domh96, Dom, Try another set of good batteries inserted properly, check and clean battery terminals to ensure that are getting a good connection. You said you had the unit disassemble, could you have pinched/broken a wire for the battery terminal, disassemble and check connections. Additional info at troubleshooting link below. Good luck.
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If you continue having issues turning on your Xbox One Wireless Controller, check out this [https://www.ifixit.com/Wiki/Xbox_One_Wireless_Controller_Won%27t_Turn_On|Xbox One Wireless Controller Won't Turn On Problem Page].
I hope this helped you out, if so let me know by pressing the helpful button.
@domh96 , Dom, Try another set of good batteries inserted properly, check and clean battery terminals to ensure that are getting good connection. You said you had the unit disassemble, could you have pinched/ broke a wire for battery terminal, disassemble and check connections. Additional info. at trouble shooting link below. Good luck.
I hope this helped you out, if so let me know by pressing the helpful button.
https://support.xbox.com/en-US/xbox-one/accessories/wireless-controller-wont-power-on