This post covers hardware diagnostics, firmware reverse engineering, and coincidental similar datasheets from Taiwanese chip manufacturers. The author ventures into fixing a broken Elgato Game Capture HD60 S USB 3.0 device by identifying and replacing faulty chips. Despite successfully replacing the regulators, issues persist with the LED lights. After a thorough investigation, the culprit turns out to be a software problem, not hardware-related. The author cleverly uses a Raspberry Pi Pico to control the lights, learns about the control commands from a substitute LED driver chip, and ultimately realizes the original LED driver chip was likely fine all along. The post highlights the journey of troubleshooting and problem-solving with meticulous detail.
https://www.downtowndougbrown.com/2024/09/fixing-an-elgato-hd60-s-hdmi-capture-device-with-the-help-of-ghidra/