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  1. Sykulski

    820-01700 shuts off shortly after login

    Hi guys I have this 16-inch which powers on and boots fine. But after around 1 minute of use the fans blasts up to full for one second and then machine turns off. It doesn't turn off at the login window. It also doesn't turn off in Target Disk mode. I tried booting from an external USB...
  2. Sykulski

    820-01700 Shuts off shortly after login

    Hi guys I have this 16-inch which powers on and boots fine. But after around 1 minute of use the fans blasts up to full for one second and then machine turns off. It doesn't turn off at the login window. It also doesn't turn off in Target Disk mode. I tried booting from an external USB...
  3. Sykulski

    820-01949 freeze when HDMI connected

    Here is another one with weird behavior. There is no liquid and no dust or debris. Board looks very nice. Machine runs fine. But when an external HDMI display is connected to USB-C (through adapter, dock or whatever I try) the machine starts to lag extremely much. It lags so much so it seems...
  4. Sykulski

    820-02020 crashes when connecting power

    I have this 13" M1 which had liquid damage. The trackpad connector was burned. After replacement of trackpad connector and flex machine boots and trackpad is working. But when I connect the power supply to the USB-C port to charge the battery the screen turns pink for a while and the machine...
  5. Sykulski

    Time/date in T2 machine

    Hello Can anybody tell me which chip stores the time and date in a MacBook Pro 13 A1989? And is it possible to program this chip with correct time and date via a chip programmer? The reason for this is that I have a customer that forgot the password for his FileVault enabled T2 machine and we...
  6. Sykulski

    820-00165 fan spins - no boot

    Got this one in saying no display. After reseating the battery the machine started. Ran for 24 hours. Next day it has shut off. I tried to start it again but now it is not booting. It has no liquid. Symptoms are fan spins then stops then spins faster and faster. VCORE is ok at 1.8V all the...
  7. Sykulski

    820-4924 - Low sound after codec replacement

    Hi guys I got this 4924. It came in with no chime and no sound and no audio devices shown in audio settings. No liquid. Just stopped working one day. I opened it up and the Cirrus audio chip got a hole burned in it. So I just replaced it. This brought the sound back but at low volume. I made a...
  8. Sykulski

    820-00165 - No WiFi hardware installed

    I have this 00165 that won’t detect WiFi card. After a PRAM reset it detects and works for around 30 minutes and then goes back to not detecting. I can then make another PRAM reset and it works again for another 30 minutes and the story continues over and over. I already tried another known...
  9. Sykulski

    [SOLVED]820-3435 - Cannot locate PP3V3_S5 semi short

    This 3435 came in dead. Upon opening i see a burned hole in the battery. Disconnected battery but still not turning on on AC. Checking PBUS is only 0.9V. Q7560 getting extremely hot. After replacing Q7560 PBUS is 8.6V but still not turning on. Now PP3V3_S4 is missing (along with S4_PWR_EN and...
  10. Sykulski

    820-3332 - Kernel panic - memory

    This one makes kernel panic as soon as it starts loading OS. It gives the error: "Possible memory corruption... blaablabla..." ASD EFI fails with ERROR - Data match failed in Memory test 9, 60, 61, 62, 63, 64, 65 and 66 I reflowed the RAM. Same issue. I am not going to replace 32 pcs...
  11. Sykulski

    820-00875 - Internal screen not working

    I have this one with no image or backlight on internal screen. External screen works fine. History is customer tried to replace cracked screen (which had image and backlight but with broken LCD). He somehow replaced the screen with the power applied and now no screens are working. Also not the...
  12. Sykulski

    820-3299 - Thunderbolt not working

    This iMac came in with everything working except thunderbolt. It belongs to a professional content creator and the thunderbolt is essential part of the customers workflow as he uses it for external displays and daisy chaining external storage media. The symptoms: Both thunderbolt ports are...
  13. Sykulski

    820-000281 - Need Touch Bar connector

    Hi. I don't have a donor board and can't seem to find any online anywhere. But I need the connector for connecting the Touch Bar display to MLB. Anybody know where to find either a donor board or the connector itself ?? Preferably a donor so I could beep my way to where to bridge the burned pins...
  14. Sykulski

    820-3536 - No mouse and no keyboard (because of screen)

    Hey Duke can you explain what (rail) got fucked up here? Computer came in with mouse and keyboard freezing 2 seconds after OS loads (but working fine in boot manager) It came form an AASP who had told the customer it was a Logic Board issue. I then put a known good Logic Board into the...
  15. Sykulski

    [SOLVED]820-3437 - Sometimes working - sometimes not

    I got this MacBook Air 820-3437 Came in dead. Does not have S0 Enables. So i measure diode mode on pin4 on U8180 and it is low (around 0.065V). I injected voltage on PM_SLP_S3_BUF_L. But nothing gets hot and current draw is low (around 0.1A) Computer is working if i force S0 state by...
  16. Sykulski

    [SOLVED]820-00840 burned wifi area and no backligt - need help identifying parts and ratings

    [SOLVED]820-00840 burned wifi area and no backligt - need help identifying parts and ratings Hi. This A1708 came in totally dead with liquid damage. The wifi chip had been on fire so I pulled it and cleaned the area. After that it starts but obviously wifi is not working at the moment. And it...
  17. Sykulski

    820-00138 Fans spins but no boot

    Was liquid damaged but cleaned by another repair shop so i can not see any corrosion. I asked the other shop if they could remember or had pictures of the damage but no luck. Symptoms: When AC connected fans starts to spin then stop then start and slowly goes faster and faster At the moment...
  18. Sykulski

    820-4924 No wifi detected

    I've got this one that isn't detecting wifi most of the time. Eventually on some boot-ups it is working. Something like 1 of 50 times it is discovering the wlan card and working. But after reboot and for the next many many reboots says "no wifi hardware installed" No liquid and no corrosion to...
  19. Sykulski

    820-00165 Dead

    This 820-00165 came in dead by a small amount of water Bad corrosion on U8005. Pulled and replaced U8005 with new one and wired pin1 to C8005/p1 as this trace was burned. Also replaced C8005. Now there is no fan spin, and all pins (PP5V_S0, PCH_HSIO_PWR_EN, PP1V05_S0, PP1V05_S0, SW_PCH_HSIO)...
  20. Sykulski

    820-3476 - Power but no chime and image

    Liquid damage that was cleaned by somebody else. When power on fan spins - then stops - then spins again and slowly ramps up and keep on spinning On first fan spin there is 3.2V on pin 5 (SPI_MOSI) and 6 (SPI_CLK) for 2-3 seconds but then drops and does not come back on along with the next fan...
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