I have 820-00138-a MOTHERBOARD that powers on when on battery but doesnt charge. checked ppbus-g3h is 1.5V. R7122 wasnt normal reading.Replaced U7100 and R7122. still getting 1.5v on ppbus_g3h.Help guys
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i have macbook a1466 board id 820-00165 with power fan spin green to orange light not booting no image or light i tried to fix its leak chip number U1930 but sad it has been damage due of corrosion here i attach the image of board. possible there is a jumper ways for it can't find parts for it to buy.
in first image there is 0v out for lcd
https://ibb.co/5XppmpkH
in 2nd image U1930 chip is damage is there any jumper solution or parts can be compatible for it
https://ibb.co/fdJkbJs8 -
Hello again,
got an MacBook Pro from 2015, model A1502 and motherboard version 820-3476-A.
Device died over night on charger.
Currently I did the follow things:
1. Checked visuell the board, test with another MagSafe-Charger and with another DC-IN-board too
2. Measured 16,5V on PP18V5_DCIN_FUSE but 0V on ADAPTER_SENSE and 0V on PP_3V42_G3H and 0V on PPBUS_G3H but 16,5V goes to U7090
3. Because of corrosion and bad resistor values I changed these components: U7090 / C7094 / C7095 / R7095 / R7096 / L7095 / C7099 -> But further... -
Hello, greetings everyone. I NEED YOUR HELP
I got this macbook that doesn't turn on, I don´t have a green light, but it's got a fan spin for a few minutes and after it's off.
This macbook comes in without damage from liquid spill.
The story of the Mac is that the screen closes and left without use for two days. Then they try to turn on and it won't turn on. Then they connect the charger and it doesn't give light.
It´s a Macbook Air 2017
Please help me understand how this works... Correct me if I'm wrong in my way of... -
MacBook Air turns on without battery connected, no green or orange light comes on, I connect the battery and it shows battery with lightning and it restarts constantly.
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MacBook Pro 820-2327-A, have green light, charge, have normal voltage, no chime. On power on fan spins 5 seconds then stop and again spin and stay spinning.
CPU Warm, DVD Drive not spinning, Mouse on USB Port inactive. No beeps without RAM DIMM-s.
PPBUS_G3H - 12.55V without battery, 11.99 with battery charging
PP3V42_G3H3.39V
PPVCORE_S0_CPU - 0.98
RAM VOLTAGE 1.49
Where to search...
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