All repairs at TDR are always followed with a repair Ticket. Please make sure you have one before purchasing this ticket.
The Xbox one x systems are known to fail from power issues. the One X in particular has issues with power supply, and motherboard related. Power supply repairs are automatic. However motherboard repairs are not always guaranteed. that is why we are a no fix no fee just pay shipping and please do not purchase until told to do so. which means a successful repair has been made.
Power supply issues are simply averted using a “new” power supply. ( most power supplies are pulled from working systems as parts are not sold separately for the One X)
As for Motherboard issues, they can range from blown Memory, Memory power IC, Power regulator, Random Capacitor Shorts or dead APUs (which is not repairable).