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    820-2879 Green light No boot

    PPbus_g3h 12.59v PP3V3_S5present u7840 1. PP3V42_G3H_PWRCTL 3.39v 2. 5V3V3_REG_EN 3.38v SMC_PM_G2_EN 3.38v 3. P0V9S5_EN 3.37v 4. P3V3S5_EN_L 0v diode .441 3.92m ohms 5. ground 6. PP3V3_S5 3.31v 7. S5PGOOD_DLY 0v .417 .544m ohms 8. RSMRST_PWRGD 3.35v I've replaced...
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    MBA 2020 Intel NO audio output via internal speakers 820-01958 HEADPHONES WORK

    Device arrived with minimal liquid damage to mic board. After hardware replacement device has no internal audio but headphones work. Diode mode j6100 pin #32 SPKRAMP_INT_L produces 0.002 pin #33 SPKRAMP_RESET_L produces 0.002. guest account no change checked sound in settings output recognizes...
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    820-00928 No audio - High fan - Slow/sluggish

    Device arrived with complaints Audio is out. Reported new headphone jack and speakers. System report AUDIO output says "Devices" and box is blank. Sound settings show no output devices. Volume slider and mute box greyed out. Mute is checked Slider on display and touch bar volume buttons...
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    820-00840 liquid damage, no power

    I have 820-00840 that does not turn on. Two USBC ports had different activity. Port #1 =5v, 0.17A steady Port#2 20v immediately cuts off, 0A then restarts Found one drop of water on the board. That drop made corrosion at R7021, R7022 near U7000. No water under U7000. Test point for...
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    820-01958 no image/no display

    Liquid damaged 820-01958. Initial presentation on usb-c ammeter: First test: 20v and 0.03A Second test: 5v off and on alternating. No boardview. Tried to map the water to 820-01521 boardview. Water was at Q7660 and Q7680. Water discolored crystal Y1900. Water was at some tiny resistor...
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