Xbox One (original) won't turn on: power brick and board checks
On the original Xbox One (model 1540) the external power brick is the most common reason the console is dead. Read the brick's light, reset it, and swap in a known-good brick. If a good brick doesn't fix it, look at the console's 12 V input and board. The One S and One X have internal supplies, so this guide's brick checks don't apply to them.
Written by the CircuitScope research team in our own words, from the sources listed at the end, and checked by our moderators.
On the original Xbox One (model 1540) the external power brick is the most common reason the console is dead. Read the brick's light, reset it, and swap in a known-good brick. If a good brick doesn't fix it, look at the console's 12 V input and board. The One S and One X have internal supplies, so this guide's brick checks don't apply to them.
Difficulty: Moderate · Time: about 60 minutes
Related codes / lights: Brick light off: no mains or failed brick, Brick light orange: standby, brick working, Brick light white: brick delivering full power to the console, Orange to white to orange when pressing power: console requests power then shuts down
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