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A1708 820-00840 Turns on with no response from capslock, CPU getting hot and pulling 20v 0.45A
- Thread starter it-solve
- Start date
What is CPU core voltage after 10-15s?
Inspect for damage USB-C redriver chip.
Inspect for damage USB-C redriver chip.
Do not expect iGPU core voltgage (VCCGT) until high graphics load is detected.
Also, STOP checking DC voltage on input pins of the buck converter coils.
USB redriver chip is on the other side of the board.
We talked many times on the forum about it.
It doesn't appear in schematic/boardview...
Also, STOP checking DC voltage on input pins of the buck converter coils.
USB redriver chip is on the other side of the board.
We talked many times on the forum about it.
It doesn't appear in schematic/boardview...
Try known good BIOS.
Not recommended, is better to test with clean ME Bios.
drive.google.com
However, it should start (at least) with another chip from 00840 board.
820-00840 8HV22 Medusa clean ME + PRAM.rar
drive.google.com
However, it should start (at least) with another chip from 00840 board.
What file did you use to flash it?
Check CPU core voltage after 10-15s.
Check CPU core voltage after 10-15s.
it-solve
Member
820-00840 8HV22 Medusa clean ME + PRAM.bin file you have provided. I did erase + flash at once, which got stuck at 90% and had to interrupt. The second time I erased the flash first, then flashed and went straight forward.
PPVCCCPU_S0G - 0.97V
PPVCCSA_S0G - 1.05V
PPVCCIO_S0G - 0.95V
PPVCCPCH_S5G - 0V
PPVCCCPU_S0G - 0.97V
PPVCCSA_S0G - 1.05V
PPVCCIO_S0G - 0.95V
PPVCCPCH_S5G - 0V
Possibly bad CPU.
Just in case, heat with quality flux; to burn eventually accumulated crap.
Just in case, heat with quality flux; to burn eventually accumulated crap.