Today I cleaned my Xbox one (disassembled it and cleaned it carefully and properly) but after I reassembled it, it didn't work anymore. The power supply glows orange continuously, but nothing happens when I press the power button (touch). The guarantee has already expired. My question is: how can you fix it yourself?
Try reconnecting all the plugs, maybe there's a loose connection somewhere.
You may have forgotten to connect the best cable. Or you damaged a cable or even the mainboard while cleaning
When you take something apart, a lot can go wrong.
You have to make sure you are grounded or at least discharged. I then do that by touching the earth at the socket, otherwise a small shock can destroy the whole device.
Make sure you document the entire dismantling and group all screws by type. All components, especially circuit boards, should be stored softly and then stored in an antistatic bag for a long time. Stone floors or dirt on the work surface, including screws, can scratch the sensitive components or even break something that would also be defective.
When dismantling you have to be careful not to use force, some plugs are glued or locked and not always easy to remove. If you slip off or screw on with the screwdriver and scratch the surface, this is usually also a defect, so use the right screwdriver and be careful.
When cleaning with e.g. A vacuum cleaner can of course scratch or break off a lot, so I recommend compressed air for something like this and a paper towel with alcohol for e.g. Thermal paste.
When assembling it is important not to forget anything and to screw in the screws loosely and then hand-tight diagonally, no longer Otherwise you can stretch the component and thus create cracks or tear off screws.
Roughly, it can be said to be very careful and careful.
Go over it again whether you forgot any plug or not properly connected, otherwise I guess the device is broken.