Gotta PC with a Thermaltake TR2 RX-550 PSU powering an 11-year old mobo and CPU. Yesterday, the computer wouldn't turn on. I pulled the PSU connectors (24- and 4-pin), jumpered the 24-pin, and tested the voltage across the various pins. Everything tested out as expected—12V, 5V, 3.3V.
So, I...