Three red lights
three red lights (no error message) - two reasons for the red lights: hardware failure or power supply unit failure.
when the three red lights is showing check the light on the power supply unit. if the light is green you console is experiencing a hardware failure. you need to send the console to MS service center or if you have no MS support in your country look for someone who knows how to repair the console or go to xbox-scene.com and look for information on how to repair the console yourself.
if the light is orange, red or no light at all, there might be a problem with the power supply unit. disconnect and reconnect the power cables from the 360 and reconnect them again. if there is an inter-cooler connected at the back of the console, remove the inter-cooler and turn on the console without the inter-cooler. try also a different wall socket and if the light on the power supply is still orange, red, or no light when you turn on the console you need to replace the power supply unit.
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