Hello, I have a MacBook 820-3115-B board that never shows an Orange light and goes straight to a green light and turns itself on when the ac adapter is plugged in. System won’t run off battery and turns off immediately when ac power unplugged. I believe the battery should be ok as it was a replacement not too long ago but it’s possible that’s the issue as most anything is possible I guess. I don’t have any spare batteries or donor boards although I have ordered 2 on the way. I have replaced U7000 and same results. I have also applied flux and reflowed the SMC IC and no change. Nothing appears to be getting abnormally hot on thermal cam. BIL flashes 1 green light. OS is not happy with the battery I think says something about the condition, can’t remember exactly what it said atm screen not attached. I checked the voltage on the now depleted battery when plugged into the board so I have access to the pins and it’s showing 2.96v, with power adapter in it shows 4.7v. Fan seems to spin at full speed immediately, although that’s with no cooling applied while testing. I’ve checked various points according to random other forum posts like the 2 resistors near U7000 showing 20 Ohm total 10 Ohm each. Main fuse good. Showing 12.59v with power adapter and No battery at the battery pins for a few seconds then steadily drops voltage down to near 6v and instantly jumps back to 12.59 and repeats. PPBUS_G3H shows 12.58v steady. PP5V_S0 shows 5.08v. PP3V42_G3H shows 3.47v. I can’t remember all the specific checks I did near u7000 so please let me know what to check again and I’ll report back with my findings. Thank you in advance for any assistance with this.
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Remove all power / no battery. Meter in lowest resistance mode. Measure the resistance between pins 17 (CSON) & 18 (CSOP) but directly on the charger IC @ U7000.
What is the measurement (in ohms)? Suspect #1 is the charger IC @ U7000 (soldering - flux it well and reflow if required with low heat so parts do not go flying across the neighborhood park).Comment
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When i fully shut off mac, orange light goes off and wont react to power button. I have difficult time resetting with combination "shift+control+option and power button", because it rarely works (reason unknown), when i manage to get orange light and then press power button macbook wont turn on and orange light goes off. When i hold combination with power button it turns on, and works fine if put it to sleep mode.
Works with battery and charges, but when i shut off i get this problem.
It had liquid spill. Board has no corrosion, keyboard is working, power button... -
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 there. I've got an issue with my Macbook Pro A1425 820-3462 with no green/orange light when plug in. Also I was unable to boot with the battery plugged in. When I change the DC-in board to another spare one I had, it show orange light and boot up with fan spinning, without the battery plug in. But it will randomly just not showing the magsafe light and the system become slow and the fans just when erratic all of sudden
Here's the voltage I've measured based on the guide I've read :
Original DC-in board (no green/orange light, no fan spin) :
SYS_ONEWIRE... -
A1502 - 820-4924-A - light green and then orange without battery - Not turning on - CPU warm,3 beepsA1502 820-4924-A, e, no liquid, stop working suddenly. Yesterday, I've plugged magesafe, light green and then orange without battery,3 beeps, not turning on, CPU warm and at some point fan was spining but nothin on screen, .. no chemie. -
Hello to all,
New laptop to troubleshoot.
It power on , fan spin , no image, no light on caps lock.
Power light is blinking orange .(not an error blink) just orange blinking.
You press power button again , again it powers up fan spin ,and then cuts off.
What i tried?
Removed everything only board, and external monitor left on , and powered with bridge to the power button (in case it was the problem)
Tried reset RAM ,new RAM , re-flashed bios dump ,from thread that i found here again all the time the same behaviour. With any kind...
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