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I have been working on this again after a couple of days away from it to clear my head... very frustrating.. The issue now is low voltage on Q7080 - CHGR_SGATE. I only get 1.6V on pin 26 of U7000. I have replaced U7000 2 times because it seems like this is where I lose the power. On Q7080 I...

Hmm. I replied Sunday morning but For whatever reason it didnt post. SMC_RESET checked R2072 pin 2 0v R5170 pin 1 3.4v r7100 pin 1 3.3v PP3V42_G3H C5003 pin 1 3.4v C5009 pin 1 3.4v SMC_BIL_BUTTON_L R5181 pin 1 3.42v

Checking SMC_RESET at R2072 pin 2 i get 0v checking SMC_ONOFF at R5170 pin 1 I get 3.42V What is the BIL? also you said "check 3v42" Checked ppv3v42_G3H at C5003 pin 1 3.4v C5009 pin 1 3.42V Checked SMC_BIL_BUTTON_L at R5181 pin 1 3.42V

checking the PPBUS_G3H rail. At the fuse F7140. I have 8,3v on pin 1 and 1.9v on pin 2. This doesn't make sense since I can't see a direct short.

Any ideas at all? Thank you.

This board is actually very clean. no signs of liquid damage at all. I have 3.42v everywhere along the rail. U1950 pin 8, U1900 pin 13m U3740 pin1, U4650 pin 9, C4820 pin1, L5001 pin1, R5127, U5110 pin 3 and 1, L7095, R8141 pin 1, When I get to C7095 I have 3.45V on pin 1 but only 1.3V on pin 2

Hello. I am working on a MBA 829-00165 and as I check the power rails I only get a 4.1 volts at R5450 Shouldn't this be 8.6 volts? My problem is that I have no lights on the charger. It seems like I have PP3v42_G3H

The risk factor.... Androids such as S6 and newer have glass backs. A large percentage of these backs break removing them. The paint on the front of many of the newer Notes and Galaxy S series comes off with the front glass along the top, so a battery or charge port issue will often times cause...

Just my two cents but the most problematic iphones are the iphone 6 plus (not 6S plus). They have the grey line syndrome. This is where you see a thin line at the very top of the LCD and the touch stops responding. then it works fine. There are many fixes offered on forums and such but in the...

Now I am back to no lights on the charger. I'll start back at square one and try again. I guess this is the pain and struggle of being a newbie........ Thank you for your previous help. I'm sure I'll be back with more questions.

No fans or other sings of life other than hearing the CD cycle. I checked CPU_VCORE at C7513 pin 1 an dhave 12.6V

So I put the logic board back into the system. I decided to try and do an SMC reset hoping for the best. What I get is: It charges the battery, the charge indicator is amber and charging. I try to power it up and get the sound of the CD loading but no video (no the backlight isnt out) no...

R5085 pin 1 is 3.43V I've been repairing Macs for years (only recently component level) and I sell the chargers so please trust me when I say i know the difference. One of the chargers I used was my own from my MBP. If need be, I will go to best buy and buy another brand new one. At least...

I have tried 4 different 85W OEM chargers and 3 different magsafe DC power boards and I get the 16.5 volts from all of them testing at J6900

Is SMC-ADAPTER_EN high... by this do you mean is there voltage? I have 3.4v at test point TP[1]SMC_RX_L .

It's old and used and certainly looks like it. It has the soft rubber cables. It really does look authentic. I tried 2 others. 85W authentic Apple. The biggest question I have is the 16.5 volts not 18.5. Could this be the u7000 is a bad chip or I did a poor job placing it?

F7040 12.64v u7000 pin 17/18 3.2 ohm pin 27/28 9.98 ohm

This repair started with no power on and no lights on the magsafe. After reading through some threads and testing the power rails I replaced the U7000 and now I get a green light but no boot, fans etc. I've gone back and forth so many times with the 1 wire and other voltages that I think I...

Hello. I have been working on an issue very much like this one. Originally I had no power, no lights at all. I Replaced U7000 now I get a green light but no boot, fans etc. I've been back and forth so many times that I really am completely lost now. It 'seems" like I have power every where that...

Finally! Cheese and Rice.. This was a real pain.. As it tuned out, there was a test point Tp[1]LCDBKLT_FB had what looked like very minor corrosion, almost not visible.. I couldn't get continuity between R7732 and the test point 2 millimeters to the left of the Resistor.. This goes directly...