Xbox keeps turning itself off and on?

So I have the original Xbox one still that has the sensor but it keeps turning itself off and on. My mum thinks it’s the sensor being broken but I do not believe that because it can work and when it starts to work it is fine and won’t turn off and on. Maybe I am tripping but it’s been working fine and I recently moved it to my downstairs tv but I moved my extension lead to plug in my phone charger which moved the Xbox wire and now it is doing it again and I can’t get it to stop.