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Recent content by cobragfox

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    A1502 Macbook Pro EFI general question regarding serial number

    Got the Medusa2 and works great. Thanks. You can close this post.
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    Medusa2: Question about use and issues

    Never mind, figured it out. You can close this case
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    Medusa2: Question about use and issues

    Trying to use the medusa2 and each time i connect to the logic board it says No chip seen (L), even on a known good logic board. Once, i was able to get it to connect and read the efi info, but on the next attempt, it wouldn't read from the same board. Has anyone had this issue and what did you...
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    820-00165: Fan spins, CPU warm, but won't chime or boot.

    Any other ideas?
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    820-00165: Fan spins, CPU warm, but won't chime or boot.

    MagSafe light responds to reset. Regarding pram, meant to say it was attempted with not effect (nothing happened).
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    820-00165: Fan spins, CPU warm, but won't chime or boot.

    No USB activity and i did do the PRAM reset and SMC reset.
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    820-00165: Fan spins, CPU warm, but won't chime or boot.

    Hello gents; Anyone have a suggestion on this issue i'm facing, the logic board powers up, fan does the initial spin, stops then comes back on and stays spinning. Original issue was no power, found U7701 had solder bridge from previous repair causing the short, pulled U7701 and found pins 5 was...
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    820-3332: Bootups but no image, backlight, or HDMI feed.

    Replaced, same result.
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    820-3332: Bootups but no image, backlight, or HDMI feed.

    There is no short on any of this pins, Without the screen connected, pins 28-30 is reading 0v. I believe the issue may be due to the enable signal thats reading 0V, but i replaced the GMUX chip already, U9100
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    820-3332: Bootups but no image, backlight, or HDMI feed.

    All measurements done with know good display connected Pin 9: 0v 28-30: 0v (u9000 pin2 5v, pin1: 0v). Had the probe on each pins before applying power to the board for each test.
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    820-3332: Bootups but no image, backlight, or HDMI feed.

    Reflowed with same result
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    820-3332: Bootups but no image, backlight, or HDMI feed.

    Have a 820-3332 with image issue. It boots up and chimes, but no image to the display or to HDMI. LCD_PWR_EN: 0v EP3V3GPU_EN: 0v GPUVCORE_EN: 0v PPVCORE_S0_GFX_REG: 0v (resistance check is 16ohm approx on PH2 and 18ohms approx on PH1) but assuming this is due to the GPUVCORE_EN being 0v I...
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    820-3332: No power, MagSafe light turns green and off, then repeats

    The guy said it was a faulty power supply, having the polarities reverse. Not sure how he would have done that unless if he was attempting to repair the MagSafe.
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    820-3332: No power, MagSafe light turns green and off, then repeats

    So magsafe has stopped blinking and acting like it should. New issue, the fan spins for about a second the shuts off, then repeats and keeps doing this. PPBUS_G3H - 12.58v PP18V5_DCIN_ISOL - 16.5v when the fan is off, and 20.5 once the fan kicks on before it shuts off again and goes back to 16.5v
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    820-3332: No power, MagSafe light turns green and off, then repeats

    Looks like Q7080 may be the issue. R7080 measures to 0.407K when it should be 100K R7081 - 62K approx R7085 - 472K approx R7086 - 333K And with battery connected, the spans spins for about a second and shutoff. Going to pull Q7080
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