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Have an 820-3536 thats water damaged, has a green light no fan spin. PPBUS_G3H 12.3v PPBUS_S5_HS_COMPUTING 12.3v PPBUS_S5_HS_OTHER5V 12.3 PPBUS_S5_HS_OTHER3V3 12.3 PPDCIN_G3H_ISOL 16.8v PPDCIN_G3H 16.8v PP3V42_G3H 3.42v PP5V_S5 0v PP5V_S4 0v PP5V_S0 0v smc_pm_g2_en = 3.4v smc_tx_l = 0v...

FPC Connector was shorted, removed and short gone, need to order this part. thanks guys, i really appreciate it...

PPVOUT_S0_LCDBKLT is short to ground. all caps look good does that mean d7701 is the issue?

Yes PRAM reset done and just tested lcd with another board and lcd works.

oh sorry its no backlight

have a 820-3787-A with no display. no signs of water damage. On the LCD FPC (J8300) PPVOUT_S0_LCDBKLT is missing PP5VR3V3_SW_LCD = 5V Q7706 PIN 4 -PPBUS_SW_LCDBKLT_PWR = 12V PIN 3 - LCDBKLT_EN_L = 12V PIN 1,2,6,5 - PPBUS_SW_BKL = 0.065V Followed PPVOUT_S0_LCDBKLT to Q7706 and a few pins...

Ok cool, then we can mark this one as solved. I really appreciate your help too. so thank you

Ok so I ran a jumper from c3510 to pin1 and it solved my problem. But do I leave it like this or is there a real fix for this?

R4808 was removed. I checked the her components and 3.3v is present. Only on the pads of r4808 and pin 1 on j4800 is it showing 1.8v while trackpad is connected. You mentioned bad trace. Does that mean that the circuit leading to the pads on r4808 are bad? And if that's the case how does one fix...

yeah i thought bad trackpad too but i have two of the same macbooks both waterdamaged and tried with both of those trackpads and thought maybe those were bad so i bought two new ones and still same thing 3.3v is only present on pin 1 if trackpad is disconnected, when trackpad is connected it is...

ok so when trackpad is not connected i get 3.3v on pin 1 but when connected i get 1.8v. i read somewhere here that it could be bad r4808 so i removed and ran jumper since its 0 ohm, also read another where it could be U8000 switch, how can i test if its the switch?

also when i connect flex and measure pin1 = pp3v3_tpad_conn, it fluctuates between 1.3 and 1.8v edit. nevermind pin1 is solid 1.8v but still nothing :(

have a wd 820-3476-A trackpad not working. connected USB keybpard and mouse and works...just trackpad doesnt work...all keys work and click button on trackpad works. all voltages seem to be present but i reballed U4801 just in case also bought new trackpad/flex but still the same. here is...

that was it! trackpad flex. this one is good to go! thank you

Sorry yes it boots I'm now noticing that it's all the keys and trackpad that's not working

FPC connector doesn't look to good so I ordered some just in case But I had a question about this board, I was wondering what the components are that I've circled in the attached photo thanks

oh good one..yes USB keyboard works

I just realized that I forgot to mention that there were 3 test points blown, in the 1st pic my finger is pointing to the one I fixed which was pretty obvious but right above my jumper is the other 2 test points that I couldn't figure out what to do with as I couldn't locate a .brd for this...

Hi guys, gotta water damaged 820-00138-A that would come on but would get really hot, theres no brd for this particular model so i kind of just winged it. water damage wasnt that bad looks like it only affected the area in the pic ive attached. anyways my problem is some of the mac startup key...

OMG...OMFG...i fixed my 1st macbook:cool: im so fucking cool lol replaced U8300 and now all is well.. grammy speech: I def could NOT have done this without this forum, especially dukefawks and all of the youtube vids provided by Louis Rossmann, so thank you guys for all that you do!!