Recent content by zeydullak

U3100 PP1V8_UPC_XA_LDOD --> .4880 PP1V1_UPC_XA_LDO_BMC --> .5167 PP3V3_UPC_XA_LDO --> .5151 PP1V8_UPC_XA_LDOA --> .5262 U3200 PP1V8_UPC_XB_LDOD --> .4941 PP1V1_UPC_XB_LDO_BMC --> .5264 PP3V3_UPC_XB_LDO --> .5265 PP1V8_UPC_XB_LDOA --> .5340 UB300 PP1V8_UPC_TA_LDOD -->.4946 PP1V1_UPC_TA_LDO_BMC...

All the ports have the same behavior ranging from .41-.43. I did regular diode mode testing. U2890 is holding the ROM firmware? I can read it but I dont have another copy of it to reflash. Do you have one? U3100 PP1v8_UPC_XA_LDOA --> 1.3 PP3V3_UPC_XA_LDO --> open PP1V1_UPC_XA_LDO_BMC --> open...

Hello, We have a Apple Macbook pro that had a damaged U3100, we replaced it, the board is now using 5.09v and 0,41a. checking under our thermal camera we see the T2 chip warming up along with a few other elemnets. What else could be causing the problem and what should we start by looking at...

15-35 seconds.

yes it is but it fails to revive the device, i attached a picture of the error code.

Hello, We have a MacBook Pro A1989 with a 820-00850 board, it does not power on, fans do not spin, no chime while the board is in the MacBook it starts at using .04 amps and goes up to .70-.80 then drops to .10 and loops at 20v, the board taken out it starts at .06 and reaches .24 as it reaches...

We have a working board and when testing it with USB tester the amps start at .06 but go up to .35~.40, The clients board stays at .06 and does not go up. L7822 -> -0.027 L7821 -> -0.027 L7813 -> 1.80280 L7817 -> .90204 L7816 ->.90784 L7814 -> 1.10418 L7815 -> 1.10330 ---------------------...

We connected a 140w charger and placed the board in a completely working MacBook, it goes up 0.90a and restarts. customer did not mention anything about water damage. What could be causing this issue?

Hello, We have an Apple MacBook Pro model A2141 and Board number 820-01700-A that does not boot up, does not chime, fans do not spin. It Uses 20v and starts at .08a and goes up to .60a~.80a and drops to .0a before going back up. What should we take a look at first? Regards, Zeydulla.

the NANDs are shorted/dead?

There are shorts on P2V5_NAND_SSD0 PP1V8_SSD0

Hello, We have a Apple MacBook Pro with a 820-01700-05 board with water damage around and under U9580, the chips seem to have some damage on them as well. I have attached some photos to this ticket, what are the chances of the chips being dead. Regards, Zeydulla.

yes that is correct, that is the reading we got on PPBUS_G3H_SSD0_SNS.

Yes we have removed the corrosion, after removing U9080 and C9081 the readings are now 3.543.

Diode mode to ground on PPBUS_G3H_SSD0_SNS is .0107.