Gdzieś na forum (nie tym ) czytałem ,że problem jest w MB.
-wymieniano Bios, też układ 16MB > wsad 8MB > nie pomogło
Laptop dawał napięcia stby i resztę .. nie działąl.
Start i reset po czasie.
Brak SM niestety utrudnia naprawę.
Po podobnych rozwiązaniach laptopów Lenovo na tych samych układach .
Tam KBC to MEC1633 (MEC1633L-AUE , BGA)
Link_ z Elceny
Linkkrótki datasheet
Quote: The MEC1633 incorporates a high-performance 32-bit ARC 625D embedded microcontroller with a 192 Kilobyte Embedded Flash Subsystem, 16 Kilobytes of SRAM, 1 Kilobyte EEPROM emulation, and a 2 Kilobyte EEPROM.
The MEC1633 communicates with the system host using the Intel® Low Pin Count bus.
The MEC1633 is the EC Base Component of a split-architecture Advanced I/O Controller system which uses BC-Link communication protocol to access up to three companion components. The BC-Link protocol is peer-to-peer providing
communication between the MEC1633 embedded controller and registers located in a companion.
The MEC1633 is directly powered by two separate suspend supply planes (VBAT and VTR) and senses a third runtime power plane (VCC) to provide “instant on” and system power management functions .
The MEC1633 also contains an integrated VTR Reset Interface and a system Power Management Interface that supports low-power states and can
drive state changes as a result of hardware wake events as defined by the MEC1633 Wake Interface.
The MEC1633 defines a software development system interface that includes an MCU Serial Debug Port, a two pin serial debug port with a 16C550A register interface that is accessible to the EC or to the LPC host and can operate up
to 2 MB/s, a flexible Flash programming interface, a Port 80 BIOS Debug Port, Gang Programmer Interface, and a JTAG interface.
The EC can also drive the JTAG interface as a master.
