smiba
New member
Hi,
Just a quick post
This macbook has a short on DCIN and for some reason a burned capacitor on PP5V_S3, the ground side is burned away. (Like the half of the capacitor is just burned crap and dust). Removed this from the board but it obviously doesn't solve a DCIN short (PP5V_S3 wasn't shorted by it either)
Removing the Fuse (Which by the way is not broken) tells me the short is on the system side (Pin 2 of F6905). I can not find any ugly parts and the motherboard looks overall decent for a 5 year old motherboard. Short is 0.4Ohm which is the lowest amount of resistance my cheap ass multimeter can measure (Holding the probes together gives 0.4Ohm as well), usually if there is a short from a capacitor the resistance would measure as somewhere between 0.6 and 1Ohm or somewhere between 1 and 25 ohms for a semi-short.
I don't have a bench supply and neither do I have a shitty chinese charger that has no short protection.
Is there a quick way to still make sure the motherboard is dead? I'm pretty sure its a internal short to ground due the low resistance.
Any parts that might be worth just quickly pulling from the motherboard to see if the short gets removed?
Oh, also PPDCIN_G3H has a short, but PPDCIN_G3H_CHGR does not. Even though the schematic tells me these are connected
Motherboard is probably trashed
Cheers
Just a quick post
This macbook has a short on DCIN and for some reason a burned capacitor on PP5V_S3, the ground side is burned away. (Like the half of the capacitor is just burned crap and dust). Removed this from the board but it obviously doesn't solve a DCIN short (PP5V_S3 wasn't shorted by it either)
Removing the Fuse (Which by the way is not broken) tells me the short is on the system side (Pin 2 of F6905). I can not find any ugly parts and the motherboard looks overall decent for a 5 year old motherboard. Short is 0.4Ohm which is the lowest amount of resistance my cheap ass multimeter can measure (Holding the probes together gives 0.4Ohm as well), usually if there is a short from a capacitor the resistance would measure as somewhere between 0.6 and 1Ohm or somewhere between 1 and 25 ohms for a semi-short.
I don't have a bench supply and neither do I have a shitty chinese charger that has no short protection.
Is there a quick way to still make sure the motherboard is dead? I'm pretty sure its a internal short to ground due the low resistance.
Any parts that might be worth just quickly pulling from the motherboard to see if the short gets removed?
Oh, also PPDCIN_G3H has a short, but PPDCIN_G3H_CHGR does not. Even though the schematic tells me these are connected
Motherboard is probably trashed
Cheers
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