Recent content by prodigy83

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    MacBook Air M1 A2337 (13" 2020) Recovery mode boot loop

    I do not have continuity on pin 31 for cable 821-03452-01 from one side of the cable to the other side. I am trying to install the OS again now to see if I still get the boot loop in to recovery mode.
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    MacBook Air M1 A2337 (13" 2020) Recovery mode boot loop

    Update, I replaced UF500 and we now have 20v, and amps are pulling too. Still doing the same thing with the power button now working and the recovery boot loop. So I went back to what you said at the beginning of this post and below are my findings. SWV012/13 with the audio flex connected I get...
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    Hi Anthony, yes, I ended up having to replace the motherboard. It sounds like you are on to...

    Hi Anthony, yes, I ended up having to replace the motherboard. It sounds like you are on to something because from what I remember, I was also hunting around that area too, unfortunately I did not see any bulging or blown capacitors. The customer wanted me to just replace the board since he was...
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    MacBook Air M1 A2337 (13" 2020) Recovery mode boot loop

    Does it matter with those diodes which way they go then? I found a short on PP3V3_UPC1_LDO Using the thermal camera and injecting voltage, nothing heats up at 2.8v as it only pulls .03 amps. I would assume this is the corresponding (UF500) CD3215 chip?
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    MacBook Air M1 A2337 (13" 2020) Recovery mode boot loop

    I just turned DZF684 around since I was not sure if it mattered which way this went but I still get OL.
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    MacBook Air M1 A2337 (13" 2020) Recovery mode boot loop

    No dice. I found another Diode from board 820-00840-A part D3413, but I get OL when measuring after the replacement. I used this part since it matched up as being one of the "USBC_XB_USB_BOT_P" parts. Does this part matter which way I solder it down? Measuring the USBC1_USB_BOT_P I get OL, but...
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    MacBook Air M1 A2337 (13" 2020) Recovery mode boot loop

    Wow, I did not know that. DZF684 is missing! While inspecting, looks like something broke off. I will see if I have another and try again tomorrow. Let you know then, thank you very much.
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    MacBook Air M1 A2337 (13" 2020) Recovery mode boot loop

    Get this, I went to test the voltage for SWV013, and nothing. I noticed though that while I had it hooked up to the USB-C meter, it was only pulling 5v. Before I could have sworn that I was pulling 20v. Anyhow I placed the board back in the mac, hooked up the main things like screen, battery...
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    MacBook Air M1 A2337 (13" 2020) Recovery mode boot loop

    This computer acts like the power button is being held down, but the power button is not held down at all. The power button actually does not even work. I hold it down to power the computer off, but it does nothing. I have tried disconnecting the power button to see if this does anything...
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    820-00928-A Battery plugged in meter reboots

    Never mind, I repositioned the battery cable many times and it never worked, then my wife comes back, and it works now. Go figure! Thank you all so very much.
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    820-00928-A Battery plugged in meter reboots

    I have a replacement logic board 820-00928-A I just received in. The board looks in very good condition, as it should be. The board turned on just fine pulling the 20v without the battery plugged in to J6951. The moment I plug the battery in to this connector, the USB-C meter turns on briefly...
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    820-01521-02 CD3215 ripped pads

    My mistake, 820-01521-02. I must of have been looking at the wrong board when typing this up. G4= TP_UPC_XA_SWD_C F4= TP_UPC_XA_SWD_D These two pads on the board are missing.
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    820-01521-02 CD3215 ripped pads

    I have a board here with ripped pads in location G4 and F4 in the center on the logic board. According the the boardview I do not see that these 2 pads go anywhere. I scraped down a little and I do not see any traces or anywhere else they went to. I am getting 5v on both USB-C ports, so my...
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    820-3302-A iMac Late 2012 Slow/Choppy

    I upgraded my clients iMac by placing in a SSD silicon power from Amazon. They took it home, then brought it back because the mnotherboard died. The fan would run by itself all the time, even when shut off, but before I replaced this motherboard, the speed was fine. I have done this hundreds of...
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    820-3302 2012 iMac no power

    U8000 keeps lighting up when I inject voltage in to C8962 pin 1. I keep finding shorts that correspond to U8000. R8910 pin 2 also has a short.
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