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  1. M

    820-3330 chime boot to black screen.

    This board no liquid damaged. Boot & chime to black screen. no backlight no video. Tried with known working screen, no luck. PPVCORE_GPU 0V. P1V5_GPU_S0 0V. Appreciate your advice.
  2. M

    820-3330 A1286 Graphic crashes with wired shapes.

    Hi I have this MacBook board is very clean and no liquid damaged. Wired graphic crashes. Can boot to OSX. tried with external monitor same issue with external monitor as well. Boot with iGPU and no crashing with integrated GPU. works fine. with above symptoms assuming Gmux is fine Tried to...
  3. M

    820-00291 iMac Chime Repeat.

    Hi, This is 2015 27 inch iMac. Chime repeat. Tried with new bios, New rams, new Cmos battery , same chime repeat. Could this be GPU? Really appreciate your help.
  4. M

    820-00163, Boot Loop.

    HI, This it not a liquid damaged board. Pretty clean. I tried with new battery and known working MacBook. cleaned me region. tried new bios. still same. Any idea?
  5. M

    820-00138 Works Fine with External Display. Inter display Freezes

    Hi All, This MLB no liquid damaged and very weird behaviour. It boots to logo in screen and freezes. When you connect to external monitor, both internal and external displays work fine. works fine with only external as well. but it freezes with internal display only. tried to different...
  6. M

    820-00281 LEFT USBC Charing but No USB funstions. Right side works fine.

    Hi All, This board is not a liquid damaged. Board is clean. using all 4 usb ports can charge. But only right side ports work for usb funstions. Left side No light on usb-c adaptors but can the macbook charge. Can you give a point where to start with?
  7. M

    820-00928 No CPU Vcore

    Hi all, This is a liquid damaged Logic board. Damaged the LCD connactor on LCD side. Fan spinging. U7410 had liquid detect stickers gone red but no damage can see physically. I get PPVCCSA_CPU and PPVCORE_S0_GPU Missing PPVCC_S0_CPU and PPVCCGT_S0_GPU. All the other major rails are present. I...
  8. M

    820-00928 no Video on internal Display. External works fine.

    Hi There are no evidance of liquid damaged on this mac. How ever internal display doesnt work. works only with external display. Board side LCD connector looks fine. How ever EDP_PANEL_PWR_EN signal is missing and PP5V-S0SW_LCD is 0.v Seams like U9800 not sending Panel_en. When I look only...
  9. M

    820-00239 NO VIDEO INTERNAL OR EXTERNAL

    Hi, This Board tuens on and charging properly But no video on internal or external. But keyboard caps lock light in on and when i boot from usb i can see usb is reading.. SMC_LID is 3.3v. I tried with different dispay still no display. Aany help greatly appriciate.
  10. M

    820-3787 Fan goes high and laggish after 10 secs. Left Fin Stack Proximity failed in ASD test

    Hi all, This is not a liquid dmg board. Fan goes high and laggish. ASD test failed with Left Fin Stack Proximity. SMBUS_SMC_0_S0_SDA AND SCL CLEAR 3.3V. GPUTHMSNS_THM_L IS 3.3V. Missing GPUTHMSNS_ALERT_L. 0V. I replaced Q5801,Q5803, U5850 still no luck. DATA sheet says it requirs a pull up...
  11. M

    820-01521 macbook air 2018 Doesn't go to sleep when lid closed.

    This is not a liquid dmaged or any damaged board. Works fine but only issue is it doesnt go to sleep when lid close. Sleep wake up works normal way but not with lid closed. Any idea?
  12. M

    820-00928 touch bar. works only if smc reset or battery reconnect.

    Hi this is tiny bit liquid damaged near U3900 area. Replaced R4308 as it was damaged and turns on works fine with out any fault. But if i try after couple of hours , it wont turn on and need to reset smc or remove battery and connect again to turn on. once it on it works without failing. Any...
  13. M

    820-01041 A1990 Touch Bar Not Turning on

    Hi All, Hope you all Safe, This is liquid damaged macbook. Nto much. CC976 replaced due to one side burnt. I get PPBUS_G3H 12.6V, PP5V_S5 5V, MISSING PP3V3_S5. Not Shorted. In U7800 I get, PP3V3_G3H_SOCPMU 3.3v PP3V3_G3H_RTC_X 3.3v PP1V1_SLPS2R 1v PP1V8_SLPS2R 1.8v PP3V3_AWAKE PMU_ONOFF_L...
  14. M

    820-00292 iMac 27-inch 2015 only 2 LED lights , Fan spins No chime.

    HI all, This board has only 2 led light up no chime. Tried different rams no luck. All the power rails are present . cpu 12v FET gets 12 v. How ever Q8450 pin 4 FET_EN_P12V_S0_R is 24v. I dont kno is this correct volatge . I have 2 logic boards same model same issue. Any help greatly...
  15. M

    820-00165 Fan Spins No Chime USB Mouse Blinking

    This is a liquid dmaged only in U1900 area. Replaced U1900 and fan spins chimed and USB light presents. When the board keep or couple of minutes and turn on again fan spins no chime usb mouse light blinking. bios area is fine and replced the bios with new reprogrammed bios. What I released...
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