For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
i still couldn't find problem. so we can say that it is not nand problem 100%. but i couldn't find where the problem comes from. do you have any news?:)
so have 820-00928 in hand. it was water damaged beetwen Y1900 and U6100 area. changed and resoldered some resistors. so problem is next
1) macbook is fully turning on with battery connected but not charging 20v 0a. ( only turning on by power button, not turning on by charger, 20v 0a only appear...
SMBUS_SMC_4_G3H_SDA/SCL 3.4v
PP20V_USBC_XB_VBUS 0v
PP3V3_S5_SMC_VDDA 3.4v
SMC_USBC_INT_L 0V ( When charger connected on the left side SMC_USBC_INT_L 0V but if charger connected right side its cycling 0v to 3.3v like USBC meter)
TBT SPI chip is shared between CD3215 and TBT Controller, so if you have damage around TBT area, it would be a good idea to disconnect TBT IC from TBT SPI (instead of desoldering just move straps between TBT IC and TBT SPI. TBT Rom is only necessary on the side you have charger plugged in. If...