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  1. M

    [SOLVED]820-2915-B graphic issue after GPU replacement

    I did some pressing on U9600 that did not change anything. However, pressing on VRAM was giving me changes on the screen. I have reflowed VRAMs and now everything seems to work fine. I hope for a long time. Problem solved, for now...
  2. M

    Forum subscription error

    Hi guys. Thanks for your help. I have been given a refund but at the same time it ended my current subscription. I have resubscribed and paid so I can post on these forums again but that kind of bring us to the same starting point. Would you be so kind to make a refund without ending my current...
  3. M

    Forum subscription error

    Dear admin, I have sent a message through forum contact form but no one has replied to me. In short, there is problem with automatic subscription. I had my normal macbook forum subscription. On 21 of April I cancelled it to change it to all-in mac+iphone subscription because as you posted there...
  4. M

    820-3787 short to ground on PP3v3_s5

    This is a waterdamaged board with damage around the battery connector area. I get PPbus_G3h, green light on charger, PP3v3_s3 is there as well, but no _s4 power rails. PP5VS4_EN on U7501 is only 0.4 V. Also resistance to ground on PP3V3_S5 is 50 ohms measured from L7560. When i plug in the...
  5. M

    [SOLVED]820-2915-B graphic issue after GPU replacement

    Hi guys! I have this motherboard and after Gpu replacement is showing pink color on the image. When i touch the board when is switch on, the color on the screen changes. Please check out the video. https://www.youtube.com/watch?v=A35mzVFl1oE
  6. M

    [SOLVED]820-00165-A no trackpad and keyboard

    Ok, so after a bit of nothing we took another look at this board, and specifically the BMON current sense area, because it looked like a bomb exploded. I managed to restore the circuit, a capacitor was missing, 3v3_S0 was not getting to pin5 of U5601 because of blown trace, and there was a high...
  7. M

    ipad mini 1 not charging battery

    Its not booting and not charging. Tried it with fully charged battery.
  8. M

    iphone 5s - water damage - red screen on boot - restart

    Hi there, I need data from water damaged iphone 5s. Did an ultrasonic clean. On boot I get apple logo followed by red screen and then phone restarts into the same loop. Please advice how to proceed. Thank you.
  9. M

    ipad mini 4 battery problem

    Thanks for the tip Jessa. I have studied gas gauge on ipad mini 2 but i do not have schematic and boardview for ipad mini 4. I have taken a picture of the board. It seems that number 1 is the gas gauge filter and it has continuity. Number 2 doesnt have continuity but probably its not a filter...
  10. M

    Imac 820-3302 0.4 ohms short to ground on PP12V_s5

    I checked 12v_s5 to all coils (including the ones for U9410 and 9610 this time), but none measure 0.4 ohms. With the highside mosfets i'm assuming you mean Q7650, Q7610 and Q7710? If so i will take them off to check. We use a power supply that limits the current, so i set it to 3A at 12v, but...
  11. M

    Imac 820-3302 0.4 ohms short to ground on PP12V_s5

    Hey, I'm working on this board, which measures 0.4 ohms from PP12v_g3h to ground, measured on pin 4/5/6 of J600 . When i put 12v on PP12v_g3h i get a little heat on Q7870. I removed it, measured again, now the 0.4 ohms is on PPbus12v_S5. I put the 12v again on PPbus12v_s5, but no luck with warm...
  12. M

    ipad mini 4 battery problem

    Hi there, I had an accident with ipad mini 4 repair. When replacing a screen, I accidentally punctured a battery and it made a small flame (not big enough to grill a hot dog). New batteries (tested two) are acting strange. Ipad boots with 16% but then suddenly jumps to 10% and then restarts...
  13. M

    Imac 820-2494-A no image

    Hi everyone! I have a problem with the logic board mentioned above. The Imac turns on, but no image (dark black) after 2 minutes the screen go from dark black to light gray. With new screen same situation. And i can not get any image with the external monitor. Any ideas with this?
  14. M

    [SOLVED]820-00165-A no trackpad and keyboard

    TPAD_SPI_INT_L With the track pad connected it's showing different voltage from 2.2v to 3.6v Just in the case that the the track pad are not conected to the motherboard the voltage is stable
  15. M

    [SOLVED]820-00165-A no trackpad and keyboard

    Maybe yes, this motherboard had some sectors with corrosion before the ultrasonic clean up. So this are the measures at the track pad side: Pin 1: 3,4v 2: 3,4v 3: 3,4v 4: 3,2v 5: 3,3v 6: 0v 7: 5,1v 8: this one also its going up and down from 2,2v to 3,2v 9: this one also is doing same as pin...
  16. M

    [SOLVED]820-00165-A no trackpad and keyboard

    So this are me measurement: With trackpad connected U4810: Pin 2: 0,002v 6: This one also goes up and down between 2,2v to 3,5v and never stop. Sorry but i didn't get what you means with enable/disable. You means disable usb ports in the system with commands?
  17. M

    [SOLVED]820-00165-A no trackpad and keyboard

    I think we have something strange here, check this out: Whit the track pad connected to the motherboard. (in OS) Pin 10: 3,32v 12: its going up and down between 2,3v and 3,8v and never stop. 14: 5,10v (in boot menu) Pin 10: 3,31v 12: 0v 14: 5,10v
  18. M

    ipad mini 1 not charging battery

    Hello fellow repair men, Today I have a question about ipad mini one. Its not charging battery, its not showing signs of life. No water damage. Charging port is giving nice 5V but on the battery connector its only about 1V. L8112 is constantly jumping between 3.4-3.6V and in diode mode its...
  19. M

    [SOLVED]820-00165-A no trackpad and keyboard

    Sorry dont kill me im learning. This are the measures again, without DC. With the Black tip on GRD: 1:1,707 2:0,986 3:Beep 4:0,536 5:0,535 6:Beep 7:0,995 8:Beep 9:0,998 10:0,918 11:OL 12:OL 13:OL 14:OL (this one first shows me 1,6xx and star go up intill shows OL) 15:OL 16:1,309 17:1,305...
  20. M

    820-3209-A macbook air CPU overheating

    Fan runs at minimum speed, but every ten seconds or so does a short burst. Sorry for not including that.
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