Search results

  1. quasimodo

    820-01700 - 20V - 0.2A - CPU getting hot

    Hey guys, liquid damaged. a lot. Amp-meter is going to 0.6A, then stays at 20V - 0.2A CPU is getting hot on one specific area. gpu nothing. game over?
  2. quasimodo

    A2442 - M1Pro - restarts after 1-2mins after/before login, wifi disabled/greyed out

    Hey guys, what is this issue? Is this somehow known? data back up was possible trough target disk mode / recovery mode / not looping system is monterey 12.5.1
  3. quasimodo

    820-02652 - fans on full speed

    Hey guys, history to the board: liquid damaged - fixed - everything worked fine - then again liquid damage - now booting, everything good, but fans on full speed. replaced trackpad - fans still on full speed. apple diagnostic is saying: problem with fan, PPF001, PPF004 what to do?
  4. quasimodo

    820-02016-A - 5V / 0.02-0.04A / PPBUS_AON jumping from 8 - 12V

    Hey guys, title is saying everything. Board is clean. No liquid damage. Looks like new. AON is jumping and cycling from 8 - 11/12V... Removed F5200 - Pin 1 is 12.3v stable. Whats can i do?
  5. quasimodo

    820-02098 - C5800 explosion - short on PPVIN_P3V8_AON_ISNS

    hey guys, see pictures below. is this fixable? when yes - how? how to remove the short?
  6. quasimodo

    820-00850 - 5V / 0A - every port

    Hey guys, getting same reading on every port. 5 - 5.2 V / 0 - 0.008A PPBUS is 12.3V PP3V3_G3H_RTC is present what to do?
  7. quasimodo

    820-01521-A - tries to boot / shuts off

    Hey guys, got this strange machine here. No liquid or drop damage. I get 20V on the charger, fan spin for 1/2 second, then fan shuts off. DFU revive went trough. I can access data via TDM. (seeing a Bootcamp partition?) What to do?
  8. quasimodo

    820-01827-01 - chime / no image / no external image

    Hey guys, having a 820-01827-01 board here. no liquid / corrosion. Had 5V on the charger, changed a faulty CD3215, now i got 20V, 1A draw. Machine is booting. Gives me a chime, Touch-Bar is turning on. But no internal or external image. Possible U9850 damage? Even with no external image? Or...
  9. quasimodo

    820-02841-05 - booting / no keyboard / no trackpad / no sound /

    hey guys, having this board here. liquid damage (heavy). working with 02098 schematic. had backlight problem. replaced backlight chip. backlight is there. corrosion in the sound area. display is also turning off and on. not stable picture. trackpad is not clicking. what to do?
  10. quasimodo

    820-00609 - iMac18,3 - 2017 - 27" - only Apple logo / no progess bar / no bootpicker possible

    Hey guys, whats going on with this machine? Can do only SMC-RESET. Only Apple Logo and chime. Option Key not working, no recovery partition, no hardware-test, nothing is working. Cant open bootpicker via option-key. No progress bar. Not booting at all. No safe mode possible...
  11. quasimodo

    820-02016 - 5.2V - 0,05A

    Hey guys, got something strange here. Customer told me, he changed the screen, then not working anymore?! Board looks fine / no visible damage. One CD3217 taking aroung 0,2A, should be working. When i plug into the other port, 0,05A. When i connect to the same port, but flipped board, the...
  12. quasimodo

    820-3476-A - ppbus_g3h 4V

    hey guys, machine came in like this (see photo). ppbus around 1v. rest of the board looking good. replaced all affected components, replaced u7100 -> now ppbus is 4v not stable chgr a/l gate is 0.02v? chgr_ugate is 5v dcin is good / 16v. what to do?
  13. quasimodo

    820-01069-B - iMac 21,5" - 2017 - no diagnostic lights

    Hey guys, 820-01069-B - not a single light is on. Changed PSU. nothing. Whats going on here?
  14. quasimodo

    820-01987-A - 20V - chime - shuts off - looping

    Hey guys, 820-01987-A - no liquid damage. Machine starts, chimes and shuts off directly. Looping. What to do? Whats wrong here?
  15. quasimodo

    A2141 - no update / fresh install / only catalina

    hey guys, got a A2141 16" here. I can install catalina over internet recovery, but nothing else over usb. "update failed" at the end of the progress bar in the recovery dfu restore no help... internet recovery is on sonoma now. (cmd+option+r) any ideas?
  16. quasimodo

    A1707 15" 2017 - no OS install possible / SSD showing up / not showing up

    Hey guys, got a 15" A1707 here. 2TB SSD. Boot into Recovery is possible. I see the SSD. But OS installation breaks up. After reboot the SSD is not showing up. After i reboot again via USB / Internernet recovery I see the SSD again. Whats going on here?
  17. quasimodo

    820-3115-B brain dead, no chime

    Hey guys, history: no green light on charger, fixed it, now starting, fans spinning, no chime, no picture/backlight cpu vcore is present, goes up to 1.12v then jumps to 0.9v any help? dead cpu?
  18. quasimodo

    820-02098-07 - 5V 1A / liquid damage

    Hey guys, got a m1 14" here. coffee damage. amp meter shows 5V 1A my readings: PPBUS_AON: 7V (.450 diode mode reading) PP3V8_AON: 2,27V (diode mode peeps, 2,7 ohm reading, cant really find a short there?) PP5V_S2_MAIN: 0V (.384 diode mode reading) backlight area looks bad. can you help...
  19. quasimodo

    820-01949 - no power / changed CD3217

    Hey guys, history: 3 ports were showing 5V/0.45A 1 port was dead / burn mark on chip / nothing on amp-meter changed the chip. now the 3 working ports showing 5V/0.25 -> dead port showing now 5V/0A ppbus_g3h / 3v3 are there, when i connect to the working ports. strange voltages when i connect...
  20. quasimodo

    820-4652-A / iMac 27" 2014 / No diagnotic LEDs

    Hey guys, thats my first iMac Logic-Board repair. No LEDs are shown. Changed PSU, no LEDs. Where to start?
Top