2 Microsoft retail Xbox One S Consoles

Product Name: 2 Microsoft retail Xbox One S Consoles
BROKEN FOR REPAIR/PARTS Both are broken and have been taken apart. (I will retail number them #1 and #2 so you know the diagnosis) Both of them have no broken ports, connectors, any damage or frying to the motherboard from what I see. I have fixed a Xbox before but that was much easier than these. I had these 2 consoles taken apart and I attempted to fix them but gave up The first one is 1 tb and will turn on and stay on for about 30 seconds and then turn off by its self. No signal is shown on the monitor. I opened it to change the power supply and it didn't work. I put everything back together like original and nothing is missing. The second one is 500 Gb and doesn't turn on at all. In the process I did lose the screws inside that holds the black plastic part to the hard drive but I just used tape. This one I cleaned all the dust and also tried to change the power supply but it also didn't work and I put everything back just like originally.