The motor controller is damaged. This chip also controls the regulators that supply power to the MCU, SDRAM, and flash memory. I can’t tell for certain, but if the damage is in the area that controls the regulators, then there is a serious chance that the MCU and flash memory may be damaged. That would be bad because you will need to transfer the flash memory contents to your replacement PCB. Moreover, if the negative supply for the preamp is damaged, then it may be that the preamp (inside the HDA) is also damaged. This would require a head swap (not DIY).
Unfortunately I can’t see what’s underneath the other end of the insulation foam. If there is a discrete 8-pin chip at location U12, then you may be lucky. U12 contains the “adaptive” data that need to be transferred to your donor. However, before moving U12, I would test the resistance between its supply and ground pins to confirm that it isn’t shorted.
Thanks for the info. I will get some hd photos from the 2 sides for a better view. And yes there is an IC in location u12 8 pin(4 each side) Winbond 25X20BLN1G 1105.
I found a salesman that can get me a replacement board, the board number is the same but the sticker has a difference instead of 2061-771714-002 AC it is 2061-771714-002 AA.
Would it matter that letter?
I only need to swap the u12 chips and it works?
Is there a chance to swap the chips memory without desolder the chip itself?
I tested the resistence between pin 4 and 8 and it got resistance, is it bad, or that isn’t the way we test this one?
Sorry, I was waiting for your photos to be approved and then forgot about your thread.
Anyway, your two boards appear to be a match. As for the resistance between pins 4 and 8 of U12, as long as it isn’t close to 0, then it will probably be OK.