Xbox One X showing no signal even after a new HDMI port? In this repair, the port was fine. The real fault was a failed TDP158RSBR HDMI retimer chip on the motherboard, which stops the video signal reaching the port while the console still powers on normally. We ruled out the cable, TV and port first, then used a preheater and hot air station to replace the chip with a working one from a donor board. The picture came back. Component-level diagnosis finds the cause, so you only pay for what works. Read the full repair breakdown, symptoms and FAQs, or contact AppleFix & Tech Engineers for Xbox repair in Hamilton, Waikato and across New Zealand.