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This one had a little damage with r7679,r7678,r7677,r7671. replaced them all, can't see liquid damage anywhere else but it did have a short with C7676, replaced that too.
Now the trackpad clicks so I guess it's kinda turning on but no post
This one had no liquid damage, but was plugged in and powered by an external monitor before it fried. I replaced one of the CD32 chips as nothing was coming up on amp meter on that one port. then i got the 5V back on that port. Just in case replaced both of them in case one was causing the no...
Hi there! i feel silly for posting this but i'm a little rusty it seems. This should be a fairly basic issue but here we are
No green light, no PP3v42, no short on PP3v42. I know Pp3v42 is required to enable green light, so the main DC in connection must be the issue? there was liquid damge...
hi there!
this one had a lot of liquid damage on the SMC area. i have replaced that twice. I can confirm that the lid sensor was also damaged but i fixed that too. now the issue is when i try to restart, i have to cut power completely, unplug battery and DC and plug back in to turn on. if i...
small amounts of liquid damage in multiple areas. There is USB activity, chime is there, fans spin up when battery is disconnected as if it's booting. backlight is there. Tested with known good screen, nothing but backlight.
Also it doesn't seem to turn off backlight if I close the lid. So...
It's as if the lid is closed, except during boot i can close the lid and open at it'll react properly. Once you see the mouse, the screen goes off. Works on HDMI perfectly. When unplugging HDMI it'll come up on the MacBook screen for a split second before shutting off again. It's not just...
Nothing comes up on amp meter (doesn't even turn on) Checked for shorts on almost all big ish caps on the board, all good. Lines seem to have little to no voltage (hard to tell what lines they are without board view)
Any common issues on these? I checked a new port already
Hi there!
This one had a badly damaged U7000 area. I didn't have this exact board in stock so I used a 820-00239 board instead. Replaced some of the components around it and also u7000 itself. I'm starting to realise that this u7000 might not be compatible with the 820-00850. Is that why it's...
Can someone tell me where to find the board number on this thing?
any way, The thing does chime, no image on display. Plug in USB drive with flashing light at first then turns off, flashing reappears, then off. Removed display, LED 1 and two come on, 3 doesn't and 4 is off I assume because no...
I have replaced both mosfets and the resisters next to them. That eventually gave me green light on the original charger too, but with a slight flicker. Works fully on fake charger. Also replaced ISL6259
PP3v42 is getting 3.48V
Have a bad feeling with with this MacBook Air. I have replaced both U7200 and r7200 and no luck. I'm weirdly getting 8.59 on ppbus. I know that this line is sensitive so im going to guess that even that is too high .
Also I had to run a Jumper on pin 17.... Pin 16 looked toasty as well. Looks...
Hi there amigos
I have a 00165 here with what I thought was going to be a basic no green light repair but it's turning into a rabbit hole. There was corrosion around SMC, no much. PPBUS_G3H is low at 8.16v PP3v42 is actually just consistently 3.41.
SMC_RESET_L is on 3V
Have replaced SMC. same...
replaced all USB controllers. there seems to be some sort of delay with data connections to USB C. for the first 5 mins after the OS boots it doesn't react with external devices (but is able to charge) after 5 mins it's perfectly normal
When trying to boot into external drive, it fails halfway...
the current sensing resisters were toast as well as ISL6259 (short to ground on current sensing pins)
R7005 was also high resistance. replaced all of this and all have the correct values now.
PPbus is on 4.3 volts.
the SMC SCL and SDA lines are both 3.42v
I also replaced Q7080 with no change...
hello there!
have solved some issues on this already. mainly it was compeltely dead, no green light and no boot.
has had water damage but im not sure if that was the cause, i have a feeling it was to do with a fake charger to begin with. anyway, to start with i replaced ISL 6259 and also both...
really odd one, as soon as i plug in the battery, it only comes on for a second and immediately turns off. fine with only DC power.
my immediate thought was current sensing circuits but thats all ok