Mi consola no enciende

My Xbox Series S console was working perfectly until a few weeks ago when I pressed the power button and the white Xbox button lit up for a second and then turned off without showing any image. I've changed power cables, I've changed plugs throughout the house and I've connected it directly to the power supply without a power strip, in addition to waiting a few hours for it to discharge and on top of that it doesn't even open the solver by pressing the sync and power buttons. I've taken it to the technician and it works perfectly for him for hours. I thought the problem is in my house but the voltage is fine and all the appliances work perfectly and a few weeks ago it was working so it doesn't make sense that it's the voltage problem in the house. Can anyone help me? I would really appreciate it. Thanks