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"Do you get 3V at pin 3/U1950?" = yes CPU Coils both at 1.7v PLT_RESET_L = 0v I also just noticed that since cleaning up U1950 I no longer get a constant fan spin but what seems to be power cycling , on for a few seconds then off for a few then back on again etc etc same for both voltages...

Ahh, That's cool! But even after getting correct voltages on U1950 I'm still getting fan spin, cpu gets warm but no beep no display, It's yet another one I feel that has beaten me :(

OK removed U1950 noticed that C1950 looked slightly corroded and it looked like a break in the trace , Removed C1950 and made sure I had repaired the trace getting 3v to pin 8, I got 3V at pin 2/U1950 now, But... I have blown U3560 into the abyss! ( How important is this? ) can I work...

ppbus_g3h - 12.53V PP3V42_G3H - 3.41V PPVRTC_G3H - 3.33V PP5V_S5 - 5V SMC_LID - 3.41V PP3V3_S5 - 3.31V All the same as before coils L7130 = 12v l7520 = 4.86v l7560 = 3.25v l3095 =0v l7430 =1.369v l7320 =1.7v l3310 =1.7v PLT_Reset_L = 0v U1950 pin 7 = .526v pin 3 = goes crazy...

Also just tried to boot in smc bypass, I get full fan spin but still no display on external or internal screen.

Oh ffs, what a noob I am :oops:! Plugged in an 85w mag and of course the fan starts to spin, also just noticed while trying this again back in the mac adding one cable at a time that no matter what is connected and regardless of running on magsafe or battery when you turn it off by holding the...

Just tried the board on the desk with fan connected and no It has NO fan spin at all and just Mv readings on 3V3_S0 and 0v on 1V05_S0

With the board in the mac and fan spinning I am getting 3V3_S0 and 1V05_S0 but checking the coils, all present and correct except for L3095 reading 0v

Got the board under the scope and tested J6100 was going to try cleaning / removing but it looks in perfect condition so started testing voltages from page 11, starting from top left and working down that column all test perfect 3.33v until I get to C1208 reading 188.7mv,then C1220- 0v C1212-...

I can confirm it is charging the battery, MagSafe just turned Green after 2 hours ish of charging, For checking USB activity I use an external HD with a working OS on it, Testing it on other working machines I get blinking light on the external HD when powering on the machine, Is this a a...

I have USB Power but don't seem to get any activity light flicker on either port, As for the battery charging, I have it plugged in now with the charger light orange, is there any other way of knowing if it is actually charging without just waiting to see if the light turns green? Magsafe...

both CPU coils are at 1.7v PLT_RESET_L is at 3.27v

Did some playing around this morning, with the board on the bench I get no 5v readings at all except on one test point right next to L7520 that reads 5v but the coil dosent, put the board back into the mac wire it all up hit the power button fan spins and I get 5v readings on the coil and 5v_s4...

Am I measuring something incorrectly? I deffinatly have fan spin! Also I just noticed that with just the board on the bench when connecting the magsafe it turns green when connected then quickly turns orange, isn't this odd behaviour with no battery attached?

Coils as follows L7130 - 12.52v L7520 - 0v L7430 - 0v L3095 - 0.01v L7560 - 3.33c U1950 pin 7 = 1.070v pin 3 between 55 and 58Mv All_sys_pwrgdm Moves around a lot up and down between 130 and 180 Mv

I'm taking it L7320 & L7310 are the two CPU coils, Both reading 0v

Signs of liquid damage but doesn't look that bad, Get green then orange light on charger fan spins no display on internal or external. Board only on desk took these ppbus_g3h - 12.53V PP3V42_G3H - 3.41V PPVRTC_G3H - 3.33V PP5V_S5 - 5V SMC_LID - 3.41V PP3V3_S5 - 3.31V Just waiting for the...

I had already tried it before posting yesterday after removing L2406 with the same resulting error, Should I bother try again removing R2415 and R8904?~ ( Also Im using the Diamond Programmer on windows 11machine ,you think this could be anything to do with the issue and is it worth trying...

I've tried for 2 hours today to get my head round this without asking for help but I'm moments away from throwing it out the window! I get the wires solderd on no problem, power up the macbook without the HD connected then get the light on the lattice go from red to green, Power up the...

So this arrived today! My only current options are to try following one of the available YouTube videos, that's no problem it looks easy enough to attach this thing, but I can't for the love of god find the file I need to use to flash with, if you could help with pointing me in the right...