Recent content by Dozer

Hi got this device, not working, found a short in the mainboard near usb. replaced this all working fine. Checked everything, all good. toke the display off and install the glue stripes. put display back without gluing for last test and... no backlight! checked connector get 69V and with...

ok , with another trackpad its ok, so if somebody have this problem here is the solution :-)

hi got this device. seems to work all ok. by pressing power button holding down the alt key left or right it starts in osx dont possible to select a start-drive. external keyboard it is possible so i realized in the screen to select start drive that keyboard and trackpad dont work. now the...

Hello, I installed new Big Sur on this machine to get the newest EFI then I replaced the RAM to 16GB and replaced the Timings in the EFI Now I installed on custom SSD Big Sur and the EFI is rewritten by installation. Of course the machine dont work now with the wrong RAM timings. My question...

need some help here no liquid spill to see, board looks clean and nice PPBUS_G3H 12.52V PP3V42_G3H 3.42V PPVRTC_G3H 3.39V SYSCLK_CLK32K_RTC nice Wave 32.89 Khz PP5V_S5 5.03V PP3v3_S5 3.34V 3V3_SUS 3.3V PM_BATLOW_L 3.32V SMC_PM_G2_ENABLE = 3.42V SMC_ADAPTER_EN =3.40 V...

replaced u7000 after that all missing power was here again missing still i2c activity in thermocam now to see the pmic in one corner getting super hot replaced the pmic and after all this finaly board is a live :-) case can be closed

found short in PPCHGR_VDDA

no PP3V3_G3H (0V) PP5V_G3S 0V PPVIN_G3H_P5VG3S = 12,55 V PPVIN_G3H_P3V3G3H = 12,56V

PP1V8_SLPS2R 0V that seems to be the problem because I think the I2C between U3200 and U3100 and SMC is not working ist this sourced from U6960 ? If yes then the again missing the CHGR_EN_MVR

the liquid damage was on the side of the board near U3100 and u3200 and found some around U2890

no DFU mode, was liquid spill, cleaned already PPBUS_G3H = 12.25V PP3V3_UPC-XB_LDO = 3.3V PP1V8_UPC_XB_LDOA = 1.8V PP1V8_UPC_XB_LDOD = 1.8V PP1V1_UPC_XB_LDO_BMC = 0V PP3V3_GrH_RTC = 0V PPVIN_G3H_P3V3G3HRTC = 12.57V CHGR_EN_MVR = 0V desoldered R6960 R6960 pin 1 has in diode...

oh men! thanks for the hint, I was lucky its C00 and the donor was C00 as well, i have another A1708 board there it is B03. thanks a lot

I2C_ADDR is in this board on GND and in 820-00840 is the same. did u mean this?

ok, never hear from code termination could you help me in this point?

So, I replaced U3200, toke from a A1708, everything fine now. Device is working again. Thanks for your help, this case is finished