I have a Macbook pro retina late 2013, i7/2,8ghz. That got some water on it.
Had water in my messenger bag, along with my mac in a cloth sleeve. And the water had sipped out during the night.
The sleeve was quite soaked a few inches in on one long side. So the liquid or moistur mostly went to either on the side with the trackpad, or the dislay side where the vents are.
So here's a recollection of what I've checked and looked at.
(I know, probably did a bunch of mistakes, and I'm kind of novice so bear with me).
When I took it out, I think the chassi might have felt a bit damp on the backside. I opened up the back plate, but couldn't feel or see any moisture on the inside, not the back plate, or on the computer parts.
I pulled the display up to see if it was wet on the keyboard, forgetting it was in hibernation. Display lit up, and I noticed letters were popping up on the password field. The keyboard area felt and looked dry, as did the display. So I just ran fingers through the keyboard, to see if any keys was responding, only Z was non responsive.
I don't know, somewhere I thought the damage is already done, so tried popping the Z key off with a tweezer, and see if it's some crap underneath and not water. But shortly after, the computer died.
I let it dry a day. After that I tried powering on, nothing. Plugged the cable in.. no green or yellow light.
After that, I removed the logic board, checked if I could see any damaged components. Nothing obvious like a big visible area with corrosion.
I plugged the power cable into only the logic board, to see if I got a reaction. I got a short green light, then a even shorter yellow, and the light went off. Took it out, put it back in. No lights. But I get a short green light if I wait a while before plugging the charger in.
After that, I looked at schematics, to see what logic board I have. And it seem to be a 820-3536.
I kept the power cable plugged in and used a multimeter to see the volts on pin 1 on R7005 (PP3bus_g3h). I got around 12V (looking at the schematics, it doesn't look like it should be 12V? but I'm not expert), that slowly went down to 0. So at least the board gets some juice.
I wondered if it needs more components plugged in to get a stable volt, so I plugged everything back in. And measured R7005 again.
And yes, it got a stable 12V. But as I measured, the charger light went green, computer started by itself, and I heard the startup sound.
So I stopped measuring, and after a few seconds it shut down again. Display didn't start, but I'm not sure if the boot process went that far or not, for it to light up.
Not sure where to go from there.
I assume it has a short somewhere? And that tips on R7005 + ground made it come alive, or at least part of it? The only thing I've tried after that was to plug the charger in while only the battery was unplugged. I got a really short green light.
I'd be grateful if someone could guide me to find where the damage is, so I know if I can fix it. Like if it's a resistor or a capacitor that needs to be replaced, if it's the mag safe board or whatever it is. At the very least, it's a good opportunity to learn something.
Update: I had some promising progress, just after I posted this. :p Plugged the charger in, first time since yesterday. The charge light stays on now, but it also starts up when the charger is present. So I kept it in to see if the display worked, and it did. Trackpad as well. But it shut down as soon as the boot process was finsihed. And it also seem to shut down if I unplug the cable. I don't know, I'm starting to wonder if the problem lies with the keyboard and maybe something with the battery.
Had water in my messenger bag, along with my mac in a cloth sleeve. And the water had sipped out during the night.
The sleeve was quite soaked a few inches in on one long side. So the liquid or moistur mostly went to either on the side with the trackpad, or the dislay side where the vents are.
So here's a recollection of what I've checked and looked at.
(I know, probably did a bunch of mistakes, and I'm kind of novice so bear with me).
When I took it out, I think the chassi might have felt a bit damp on the backside. I opened up the back plate, but couldn't feel or see any moisture on the inside, not the back plate, or on the computer parts.
I pulled the display up to see if it was wet on the keyboard, forgetting it was in hibernation. Display lit up, and I noticed letters were popping up on the password field. The keyboard area felt and looked dry, as did the display. So I just ran fingers through the keyboard, to see if any keys was responding, only Z was non responsive.
I don't know, somewhere I thought the damage is already done, so tried popping the Z key off with a tweezer, and see if it's some crap underneath and not water. But shortly after, the computer died.
I let it dry a day. After that I tried powering on, nothing. Plugged the cable in.. no green or yellow light.
After that, I removed the logic board, checked if I could see any damaged components. Nothing obvious like a big visible area with corrosion.
I plugged the power cable into only the logic board, to see if I got a reaction. I got a short green light, then a even shorter yellow, and the light went off. Took it out, put it back in. No lights. But I get a short green light if I wait a while before plugging the charger in.
After that, I looked at schematics, to see what logic board I have. And it seem to be a 820-3536.
I kept the power cable plugged in and used a multimeter to see the volts on pin 1 on R7005 (PP3bus_g3h). I got around 12V (looking at the schematics, it doesn't look like it should be 12V? but I'm not expert), that slowly went down to 0. So at least the board gets some juice.
I wondered if it needs more components plugged in to get a stable volt, so I plugged everything back in. And measured R7005 again.
And yes, it got a stable 12V. But as I measured, the charger light went green, computer started by itself, and I heard the startup sound.
So I stopped measuring, and after a few seconds it shut down again. Display didn't start, but I'm not sure if the boot process went that far or not, for it to light up.
Not sure where to go from there.
I assume it has a short somewhere? And that tips on R7005 + ground made it come alive, or at least part of it? The only thing I've tried after that was to plug the charger in while only the battery was unplugged. I got a really short green light.
I'd be grateful if someone could guide me to find where the damage is, so I know if I can fix it. Like if it's a resistor or a capacitor that needs to be replaced, if it's the mag safe board or whatever it is. At the very least, it's a good opportunity to learn something.
Update: I had some promising progress, just after I posted this. :p Plugged the charger in, first time since yesterday. The charge light stays on now, but it also starts up when the charger is present. So I kept it in to see if the display worked, and it did. Trackpad as well. But it shut down as soon as the boot process was finsihed. And it also seem to shut down if I unplug the cable. I don't know, I'm starting to wonder if the problem lies with the keyboard and maybe something with the battery.
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