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Whats up guys just shoot me quick, green light on charger no liquid damage cpu gets warm, no fan spin 5vs0 3v3s0 is present no known shorts to ground let me guess dead graphics chip should i send to the donor gods or does it have a chance for life again?

mark this one as solved guys another 2011 bites the dust

Copy that Duke i will remember this advice for next time any ideas what could have shorted this out there was no water damage.

Check cpu vcore voltage report back readings. Also Check if you have external video display.

Double check your logic board connector for loose pins or corrosion from the dcin board to your logic board and flex cable if that is good check your current sense resistors around u7000 and check your soldering for u7000.

Hey Guys working on this 15in 820-3662 does not turn on has green light on charger, has a short to ground on ppbus G3h circut So i removed fuses 7040 and 7041 put meter in diode mode short shows up on pin2 going to system. Then i injected voltage and nothing really gets hot but i used a flair...

Customers complaint shuts off before boot. I checked current sense resistors all good. checked and replaced clock chip good, main power rails are present no known shorts to ground no water damage the tantalum cap is the only thing I didn't change yet because it does not have a short to ground...

Ok guys mark this one as solved, i was fucking trolled by the charger here is why. So i was using a magesafe 1 charger with the magsafe 2 adapter piece apple sells for some reason on the 2015 boards this causes a glitch where the logic board won't turn on, this has has happened to me on a same...

Hey Duke 5v bus is steady no liquid damage clean as a Whistle PPVRTC is 0v charger plugged in. Is that normal in an s5 state?

whats good big bro yes pin is steady 0v not pulsing

Here is what i got simba thanks for your assistance PM_SLP_S4_L 0V S5_PWRGD 3.395 PM_DSW_PWRGD 3.423

Hi guys working on an 820-00165 air board, as we all know all rails are present green light on charger. Only rail i'm not sure about is PP5V S4RS3 which has 0v i tested for shorts on s0 rails and all are fine. What else could i check to solve this issue ?

Any luck fixing your board Tony tone

No good history on this thing upon inspection no signs of water damage very confusing as to why no chime and power rails are present

Yes Duke had another 2015 in the shop with good lcd tested and same problem

Tried the pram reset and also an external display no change this unit definitely has no video.

Hey guys I'm working on a 820-4924 no signs of liquid damage unit turns on verified by plugging in a usb thumb stick with led on it. Fan spins when it gets hot, does not chime or display any video. S0 power rails have power, cpu vcore rail also has power. Any ideas on what the problem would be ?

Solved smc reset solved the problem everyone keep this in mind if your having this issue with 2015 retina.

Because the board is not turning on by itself that's why i don't think it's a battery when the board is plugged in no battery connected it wont turn on.

Hi guys on this piece of crap board i managed to obtain a brd.view its a little different but the signal im getting is called PM_Batlow_L i get between 0.8xxV to 0.7XXv until it shuts down When off it is about 0.014 off is this normal? i checked pullup resistors and are in specs for smc.