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  1. prodigy83

    820-01814 No PP1V8_SLPS2R

    I used my more expensive meter this time to triple check things: C7023 Pin 2 is 69k. Pin 1 is 68.1k C7020 pin 1 is 15.3m, pin 2 is 14.9m C7050 pin 1 is 14.4m
  2. prodigy83

    820-01814 No PP1V8_SLPS2R

    R7060 Is back on. Both fuses are still off. C7020: 2.13 C7050: 2.14
  3. prodigy83

    820-01814 No PP1V8_SLPS2R

    Sorry about that. I forgot to mention I replaced R7015, and R7021, they looked like they had eyes in the center. I also replaced C7023, C7080. When testing everything again I stuck back on the 2 fuses F7000/1. I did also remove R7060 at one point to further verify things. I did stick it back...
  4. prodigy83

    820-01814 No PP1V8_SLPS2R

    I have replaced U7000 3 times total now with a brand new one but I keep getting the same result. r7015 pin 1 has 5.1v, pin 2 has 1.266v. I get no shorts anywhere (actually just found one). Diode mode on both pins is OL. PPVBAT_G3H_CHGR_REG Now seems to have a short. Thermal cam shows U3900...
  5. prodigy83

    820-01814 No PP1V8_SLPS2R

    C7050 fluctuates from 1.5v to .900. P_IN 5.12 AUX_DET 0 SMC_RST_IN also appears to be CHGR_RST_IN? I get 0v. TP_CHGR_SMC_RST_L I also get 0v but the board is not hooked up to a trackpad. VDDA 5.06 VDDP 5.06 EN_MVR 0 CBC_ON Don't know how I am going to test this one without removing U7000 or...
  6. prodigy83

    820-01814 No PP1V8_SLPS2R

    My refernce only: TT9752 I get no PP1V8_SLPS2R, so cannot do DFU. I have replaced U7000, still same results, 5V on the meter. PBUS line coming from U7000 is 1v. 5v is present on R7020 pin 1. PPVBAT_G3H_CHGR_REG also has only 1v. What am I missing here? No liquid damage at all. The board is very...
  7. prodigy83

    820-02020 No Backlight

    I went back and checked RP611 Pin 1 and there is definetly no voltage. I tested on my external monitor again and it recieves a signal but never any video. I do believe I hooked up one of the intel displays. Fried? When I tried to turn the computer on, the fan spins up real fast.
  8. prodigy83

    820-02020 No Backlight

    Reference Only: REF1137 History on the board, I think the touch bar could have fried some things but I am not certain as I have worked on this a while back, and am back at it again. I can see picture externally on a display, and also on the LCD screen, just no backlight. LPDP_INT_HPD does not...
  9. prodigy83

    820-00840 no video

    No go. This board does have a bit of audio lines (Speaker Amp according to schematics) that have been burned, but they all seem to be at the proper voltage. Like around C6464.
  10. prodigy83

    820-00431 No Video Lightning Strike

    No go with flashing the BIOS, I am however seeing only the 1st and 2nd LED light up. I am not sure if I got the right bin file. I found this one off of Badcaps.net 9.5.3.1526_SLM_PRD_outimage.rar https://www.badcaps.net/forum/attachment.php?attachmentid=218259&d=1597857549
  11. prodigy83

    820-00431 No Video Lightning Strike

    Yes, I do. I will try the BIOS. Thank you.
  12. prodigy83

    820-00431 No Video Lightning Strike

    This iMac the customer said stop responding to video when lightning struck. I have narrowed the power rails down to no voltage on PP1V05_S0_REG. The 4 LED's, only 1, 2, and 3 light up. Even if I plug in the screen from the iMac, it never recognizes the screen by lighting up that 4th LED. I get...
  13. prodigy83

    820-00850 No video bad corrosion

    No go, I did a bit more troubleshooting and I have no EDP_BKLT_EN. Looks like this leads back to the processor. No luck?
  14. prodigy83

    820-02020 Corner T2 Pulsing

    No luck with forced DFU mode however it may be trying to do something. I noticed the USB-C meter remains at 5v until I removed the tweezers and it goes back up to 20v. Also I tried hooking an external monitor back up to it again and it seems to be getting a signal, and then it loses the signal...
  15. prodigy83

    820-02020 Corner T2 Pulsing

    Liquid damage, between UP710 and RV810 the damage is present on one of the traces, looks like one of the slugs between RW080 and RV810. I would not imagine this would affect this? I was not able to get it in to DFU mode but I have not tried to force it. Will try now. I have also replaced the...
  16. prodigy83

    820-02020 Corner T2 Pulsing

    My reference: REF1128 Issue: Thermal camera shows pulsing in the Y1 region of the U8100 Chip when initially turned on, but stops after a few seconds. L5800 also I can see warms up during this process. The board does turn on, fan spins, but I get no video on internal or external display. I do...
  17. prodigy83

    820-01598-06 Reboots and slow

    Aha, sorry. I am used to the old power aliases. The USB-C port does have slight damage but as long as I have been scewing down the connector plate, it stays fine at 20v. Upon replacing U7000 I do have 3 pads missing but they say NC, so I am assuming these don't matter. The pad numbers missing...
  18. prodigy83

    820-01598-06 Reboots and slow

    Its not powering up now but I get a healthy 20v PPDCIN_G3H_CHGR up to the mosfet Q7030. I tried reflowing this but I think it may be bad? I just removed L7030 to isolate the issue and pad 1 of L7030 jumps up and down from 2.1v to 1.6v. Took up Q7030 also and pin 1 is up and down, its is looking...
  19. prodigy83

    820-01598-06 Reboots and slow

    C7652 pin 1 Is spiking up and down, 1.99v to 0v, there was burnt sides around this area. I take it C7652 is not supposed to do this? Bad U7650? Replaced the following: C7691 This is spiking up and down too 3.2 to almost 0v, C7652, C7698, and R7695 all replaced. I get 12.3v to 12.6v on Pin 23 on...
  20. prodigy83

    820-01598-06 Reboots and slow

    Update: J6700 voltages while running with the lid closed: Pin 18= 1.7v Pin 19= 0v Pin 20= 5.1 Are we a bit low on pins 18 and 19 with the lid being closed?
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