The repair of a liquid-damaged Lenovo IdeaPad Gaming 3-15ACH6 laptop involved replacing the ENE KB9022QD embedded controller. After the initial damage, the motherboard showed a short circuit of 20 Ohms on a power line, which was resolved by removing the faulty chip.
The new controller was installed using a QFP-128 package. To program the chip, a Mic-Vision (SAS I/O) programmer, revision 4.1, was utilized. The process required manual configuration of the JDBG1 debug port and grounding the 42nd pin of the controller to enter programming mode.
The author successfully flashed the firmware using a 12-pin ribbon cable connected to the programmer. Verification confirmed the chip was correctly programmed. However, the laptop initially failed to boot or charge properly when powered by a laboratory power supply.
The issue was resolved by connecting a standard 135W Lenovo power adapter. The laptop recognized the official charger, booted successfully, and began charging the battery, confirming that the repair and firmware flashing were successful.
