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[SOLVED]820-00138 powers on a few seconds then off/battery charge indicator shows on screen Just got a 820-00138 today that was liquid damaged. LCI indicators are all triggered. Cleaned with alcohol and inspected through microscope for any burned evidence. When power is applied I get an orange...

Anyone have a reliable source to get logic boards to refurbish? Not donor board with the hole drilled through, but boards that are not working that can be bought in a lot to fix. Thanks!

thanks. i have the ISL. Do you know of a source for the Q7130 MOSFET? DigiKey and Mouser don't seem to have it in their inventory. I have a few donor boards but I don't trust them for parts in that area.

Removed F7140 and I get .71v on pin 2 & 0v on pin 1 .506 Ohms on pin 2 diode mode .045 Ohms on pin 1 diode mode

I have a short to ground on both LCDBKLT_BOOST & PPVOUT_SW_LCDBKLT_FB. I can find a place to make a jumper for BOOST but there's nowhere that I can see to make a jumper connection to the LP8550 for the FB. There's a TP shown on the Boardview but on the logic board it's not there. Is it worth...

Will do. Thanks!

Short on PPBUS to GND. Also short on C7125 pin 2 GND and via broken U7100 and pin 23 to pin 2 C7125. Think this one will go to the donor pile!

I have PPBUS coming in at the DC in jack and through the F7700 fuse and surrounding capacitors at 18.5v. It seems to be missing when it goes to the other side of the board. What's normal reading in diode mode for GND & PPBUS? Will look around U7100 when I get back to my shop.

I have an 820-3536-A that has no power. Green light on charger. Laptop has had spill damage. PPBUS_S5_HS_OTHER3V3 measured at pin 23 of U7501 reads as 1v. How is this generated? No PP5V_S5 or PP3V_S0 No PPBUS_G3H at pin 2 of R5400. My power supply is showing it's pulling .01amps when adapter...

Looks like I have a short on pin 5 PPVOUT_SW_LCDBKLT_FB of U7701 as it leaves and goes to D7701 in one of the layers of the board. Should I try to dig out the connection from under pin 5 of U7701 and then run a wire from there to D7701? There's a componet labeled XW7720 on the schematic but...

ok will do. thanks!

Thanks! I replaced Q7707 and now I have some different readings: U7701 *After changing Q7707 Pin 3= .97v L7701 *After changing Q7707 8.53v both pins D7701 *After changing Q7707 8.53v both pins Q7706 after Q7707 change. Pin 1,2,5,6=8.58v Pin 4=8.58v Pin 3=2.62v Q7707 Changed out Q7707 Pin...

I have another MacBook Air 13” Mid-2013/Early-2014 820-3437-B that I'm fighting with no backlight. Any help would be appreciated. I seemed to be getting quite a few of these lately. No backlight on screen. Flashing question mark can be seen when illuminated from back of panel. All measurements...

There was some funky stuff going on with the via between Q6915 & R6912 so I replaced them both and ran a jumper in it's place. After that, computer starts normally and all measurements are accurate and battery is detected and charging. Thanks for your help!

ok thanks will do and post findings

hey all! I have an 820-2330-A MacBook 2008 15" that has a green light on the charger but won't start either by pressing power button or shorting the power on pads. Q6910 Pin 1=16.93v Pin 2=5.73 Pin 6=16.93v Q6915 Pin 2=2.3v Pin 3=7.39v Pin 5=0v Pin 6=0v U6915 Pin 1=8.05v Pin 3=3.28v Pin 4=0v...

OK. I ended up replacing the trackpad and cable and along with the SMD work that I did the customer paid and picked up the laptop. Many thanks for your help on this forum!

Roger that

Right, got that covered. I'm looking for new ones that have NOT been soldered on the boards yet. I haven't have much luck with trying to reuse connectors that come from donor boards. The plastic usually warped and melts and becomes un-usable after removing it.

Anyone have a recommendation for replacement J7000 DC in power connectors for the 820-3536-A? The 6 pin connector on the logic board, not the DC IN board. Thanks!