Hi,
I bought a Ryzen Thinkpad L13 Gen 2a from an e-waste recycler and the i2c for the keyboard backlight is dodgy. My googling on forums suggests that this was a known issue and Lenovo did RMA for this but, obviously, I don't have a warranty.

Andy....

Hi all,
I've mostly worked construction. I bought an e-waste L13 gen 2a with annoying keyboard backlight issues and am joining this forum to request schematics to save time figuring out where to attach a DSLogic to see what's happening on the i2c bus that's causing the driver to fail to initialise.
Honestly, I don't do much else with electronics. I did buy an Aerohive AP330 router, a BDI 2000 debugger, an mpcie to pcie adaptor and a Radeon HD5570 to build a fully open multicore PPC system to serve as a comparison against the Wii U which has undocumented SoC (even with the leaked IBM...