Workshop: repairs and experiments

Tag: RAM

How to check the PMIC on a DDR5 module: shorts, voltages in the PC and a bench start

06.11.2026

The power chip on the DDR5 module itself: how to check the rails for shorts, measure the voltages in the PC (JEDEC and XMP) and start the PMIC without a motherboard. Our readings from the dead module.

Reading a DDR5 module’s SPD: Windows, CH341A and ESP32 — and why the dumps differ

06.11.2026

Three ways to read a DDR5 module’s SPD, our dumps for comparison, why the Windows file turned out incomplete, ESP32 wiring and firmware.