Recent content by Vertx

Hello, 820-00840 board has burn mark on U3200. After U3200 replacement board still won't get 20V. Noticed that originaly U3200 was as CD3215C and i repalced it with CD3215B one. Could that be the issue? PPBUS_G3H 0V PP3V3_G3H 3.3V PP3V3_UPC_XA_LDO - 3.3V PP3V3_UPC_XB_LDO - 3.3V SMC_USBC_INT_L...

It automatically appears in AC2. Don't have same working board at the moment to compare, but i will check them as soon as i will have one :giggle:

Hello!, have macbook pro A2289 820-01987 which had liquid damage. Replaced damaged and corroded components, device gets 5V 0.10A. Device is detected in DFU mode, tried to revive it but got an error. What could i check next please? PPBUS_G3H 12.27V 3V3_G3H_RTC 3.3V PP3V3_G3H 3.3V

PLT_RST_L 3.3V

Hello!, got 820-00923 board with no signs of liquid damage. Turns on: Trackpad active no usb activity no external image no caps lock cpu gets hot and fans stats to spin after a few minutes CPU core voltage goes from 1V to 0.7. Tried good known bios that i found posted in this forum. Any...

Hello!, got this board 820-00923A which has short on PPVBAT_G3H_CHGR. Removed Q7040 to find that pad were burnt, but even with Q7040 removed there still was short. Later tried removing these components to solve short problem: Q7065, C7050, C7051, U7000, C7053, R7060, C7069, C7064, C7066, but not...

Hello!, i have A2289 with keyboard problem, A and D keys were not working so replaced with a new keyboard just to find out that same 2 keys still not working... Any ideas?

All problems sorted, just need to fit new keyboard and will be as good as new. Finally found out that some of this model boards does not suppose to have U8640, R8640, R8645, R8637 mounted, so removed these and finally machine boots to SSD!, Thank you 2informaticos for your guidance and time...

Thank you!, problem was in mosfets, replaced, stopped killing pen drives finally, boots to external devices, but unfortunately still can't boot to ssd.. Checked Compared U8640 pins to good board so only difference i found is between pin6 ssd_pwr_en_conn_L 108K (bad board) = 2.300K (good board)...

Used this one https://www.amazon.co.uk/gp/product/B015Z7XE0A/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1. But usb c adapter works still fine, board kills whatever is connected to it and has IC's (maybe instead of 5V it gives all around 20V?). Yes, I tried another one usb c adapter and...

Replaced U8640, values on resistors way better now, found out that when usb flash drive burned down, ssd got damaged as well, tried to boot only to usb without ssd and board burned another one usb flash drive. SSD issue looks like resolved, but can't understand why is it burning all usb...

Board still works/boots to usb only not ssd - question mark. Flash drive burned down. Still on this board I think values of resistors are too low as on working board as checked they go up to 100k and that one R8620 over 400K, any ideas why on this one values are so low?, what could I check...

Hello!, Got this 820-00840 which had damaged SSD connector and few knocked off caps around it. Replaced SSD connector, turned on and off few times to test it and it was booting all fine, so decided to test fully with connected trackpad keyboard and speakers, after putting board back to housing...

Hello!, have 820-4924A that is missing PP5VS3, mac turns on in SMC Bypass Mode, boots till half and witches off. PP5VS3_EN 0V SMC_ADAPTER_EN 3.45v 3V3_S5 3.3V 3V3_SUS 3.3V S5_PWRGD from 5V GOES TO 3.3v PM_DSW_PWRGD 3.4V PM_BATLOW_L 0V Looks like i am using 85W magsafe 2 fake charger (have only...

Hello!, Got liquid damaged 820-00239 board, that takes only 5v and 0.12A, looks like someone already tried to work on this board, because found out that cap C6905 had hole on pin1 - PPVIN_G3H_P3V3G3H. Would you think connecting C6905 pin 1 to C6906 pin 1 would be ok in order to keep working on...