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  1. PapaRayRay

    820-01700 persistent power cycle: 20 V, 0 A drop, re-ramp

    Intake Condition Liquid damage (customer spill). On bench: most ports negotiated 5 V ~0.30 A, one port showed amp “bouncing” (unstable current). Timeline / What I Did Ultrasonic clean (proper dry-out). → Behavior changed to boot-then-die loop: negotiates 20 V, fans spin for a few seconds till...
  2. PapaRayRay

    A2179 820-01958 slow, hot cpu core 4/5

    Came in, no power, liquid damage. Ultrasonic cleaning allowed me to power on and boot very very slowly. Keyboard back light area looked a bit rusty but was functioning I removed funky looking caps just to clean up and re-solder, continued working but computers very slow, I imagine it’s a sensor...
  3. PapaRayRay

    A1707 820-00928 not turning on from power button properly

    When you shut it down it will not turn on unless you do SMC reset or just unplug it and replug it, wether battery is plugged in or not doesn’t matter. Selecting restart is also unsuccessful on the turn back on part. The button appears to be functional as you can hold it down to turn the computer...
  4. PapaRayRay

    A1707 820-00928-A Bootloop

    Does not boot in safe mode, does not go to recovery. Loads Apple all the way and then shuts off all the way and then tries again indefinitely. I tried known good bios (sourced from here in a previous thread) according to the software successfully, and 2 new batteries; the problem persists. The...
  5. PapaRayRay

    MacBook Pro (15-inch, 2017) A1707 820-00928 "Only boots Safe Mode/Critical Update/Bootloop" (no visible damage)

    Unfortunately to hopefully provide all crucial data I have to quickly run it from the beginning :sleep: (I'll try and give only highlights): Came in from other shop for "only booting in safe mode" with a fresh install of Big Sur. I confirmed this issue with my eyes...
  6. PapaRayRay

    {[SOLVED]} 820-3787 Won't turn "OFF"

    Everything I could think of software I've tried; I've tried all swappable parts. Every approach to turn computer off results in the same outcome. Screen goes off, fans keep spinning and it gets as hot as a metal slide on a bright Florida summer in 1993 up around the middle F-keys. There is...
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