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PWM is 1.6V The original bios was put back and i have done some pram's no change in behaviour.

Hi, I have a 820-000165 i would love to get running. It Has no V-Core, but ALL_SYS_PWRGD is present and everything else seems to be present other than CPU_VR_EN. Previously i replaced the VIN resistor, did the usual trace repair to the VIN (due to missing probe points) and soldered a new...

Hi, we recieved a 2914 with LVDS damage and so we replaced the LVDS We now have 33v on backlight output, but the screen remains black. We have tried another screen assembly, same results. We have 3v3 at L9000 as we should, and U9000 is functioning normally. L9010 and L9011 have been replaced...

Sounds like it has a 2010 air trackpad in it not a 2011 air trackpad. There is a difference in the function keys between the year i.e 2010 airs dont have keyboard backlights

Wow. Yeah, i tell all my customers not to bother trying to re-cable or fix chargers.

I heard the same. Keeping fingers.

theres only a positive and negative to connect from a MagSafe cable. The controller is in the tip. So just cut of a cable from a charger and wire up the positive and ground correctly. Ive added banana plugs to mine so I can remove it from the psu easily.

Thanks for providing the information i missed.

You can google a SMC bypass, it bypasses certain function of SMC's Its just holding the power button for 10 seconds before attaching a power source (such as a battery or charger) anyway with ACOK low id suggest replacing the ISL6259

the components bad then, replace it, it should restore the diaply

thats your problem, restore that and youll be good, check for input, whatever enable thats required and shorts on output.

Okay, ACOK is 1.14V so how do you have a green light, It could be something to do with that. Does it work in SMC bypass? Thanks Zac

does it say 'plugged in not charging'

is PP4V5_AUDIO_ANALOG present?

Yes, 2013-14 are compatible, 2015 will not backlight with a 2013-14 screen. though you will have the 5v LCD enable, and i belive a display (but youll have to shine a torch through the back of the apple logo to see) Buy a 2015 assembly, youll need one for testing anyway. Im fairly certain with...

25V? Thats a backlight, correct me if im wrong. You have the voltage there, So im assuming the screen lights up black with no display (but noticeably lighter than before its turned on?)

Have you had this issue before? Are you 100% its non liquid damaged? In some cases bad but semi intact probe points will loose connection during the cleaning cycle

Hi, although im not very active on this forum i have something that i think people may find useful. You need to take a genuine Magsafe cable and connect it to a bench power supply. Use it as your charger. You can set voltage, easily turn it on and off, but most importantly: You can measure...

what cleaner do you have? Rewind 3 years, i killed allot of chipsets in substandard cleaners. what ultrasonic cleaner do you have. Maybe 2/10 repairs would go into the cleaner working and come out dead. I mean fully dead, quater fan spin dead (due to bad PCH's) In the case of MCP79's and 89's...

No Title an 820-3330, they snapped the PCH die whilst removing the motherboard, then powered it on causing some fire and 2 internal PCB shorts. The worst part is i had another a week later, 820-3332 that someone somehow ripped the PCH die off, The GPU, GPU fest and GPU supply were all fried...