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Hi Duke, No I am not getting 5V on L6200 and on L6201 as well I am not getting any voltage.

No. PP4V5_AUDIO_ANALOG is not present.

Hi Team, I have received a Macbook Pro 820-2879 where the computer works fine, just that the Audio does not work. If gone on System Preferences >> Sound >> Output >> No output devices found. Input >> No input devices found. I thought that it could be a Software issues, so I went ahead and...

I apologize if I have been rude in any way. My emotions sometimes run high due to lack of success and ending up to a failure.

Duke, i can say one thing. If I am explained once how it works, I don't forget, but my basics need to be cleared. Before going for Jessa or Louis class last year I never did this. I only used to change screens and parts replacement, which I had made it clear on Rossmann's website where in...

Duke, i have never done this in my life. I never studied what is Ohms law. Yes I understand that my answers are weird, but then how do i learn. Whenever i ask questions, I am kicked away and treated like, don't ever ask your questions again, on this forum.

Hi Duke, Thanks for all your help. I found out that one of the resistors R7116 was shorted to ground. After removing that resistor the short is gone. I had one more question. The resistor R7116 has a value of 20K with 1%, 1/16W, MF-LF , 402.... This is too technical for me to understand...

Thanks Duke

Hi Duke, I am not able to find any diagram on google. Is it possible to help me find out where can I find the R5360/62 so that I can get this iMac fixed. Also regarding your question, if that is the only sensor failing - The answer is yes. Regarding the sensor actual reading, I am not aware...

dukefawks You are senior in this field, so may be you are correct. But I think if the SMC is dead then the computer would not turn on. But in my case the computer is coming on only when connected by magsafe adapter and the battery is showing a X mark. So I think it has do do something with...

Hi Louis / Duke and the entire Rossmann group, I would like to share 2 of my success stories with you guys. Last week I had 2 computers which were dead. I watched a couple of videos of Louis on the one wire circuit and very patiently and using brains went ahead with the 820-2850 checking...

PROBLEM SOLVED. Hi Louis / Jessa / Duke. I am sorry for not using my brains. I don't know why I feel scared, while I am troubleshooting the problems. Now in this case as Jessa pointed out "You don't have a board problem until you KNOW you DON'T have a parts problem." In my case it was the...

Here is my work around and findings. I had a good working trackpad, which I installed it on the machine. The machine continues to shut down if the new trackpad is connected to the logic board. I think this problem is related to the SMC. I shall check the following voltage rails tomorrow and get...

Hi Team, I think i figured out what the problem is. As I mentioned earlier that the trackpad is causing this problem. I also think ( correct me if i am wrong ) that the keyboard is connected via the trackpad. So if the trackpad is disconnected the keyboard also does not work. While the...

Hi team, - Can someone please give me a hint, what is that I am not doing correct. As mentioned earlier - I disconnected the Trackpad and now the computer does not shut down. Now the computer does not come on by pressing the power button. I even tried to put this logic board into another...

Hi Jessa, I appreciate you and Louis helping me understand this. Now I have a another problem. I figured out that when the trackpad is plugged in the original problem of the computer starting up and then shutting down occurs. Now I encounter a different problem. The computer only comes on...

Definitely the board 820-3115 has a problem. The board out of the housing makes the fan spin and does not shut down as it does when back into the housing. So I am wondering why is it that when the board is out of the housing does not shut down, but when put back into the housing comes on and...

peterfixit I don't care who laughs at me or not. I am here to learn. Even if I am bullshitted I am not giving up. This is my bread and butter. Yes I know I am a slow learner, but will never give up.

Hi Duke, The logic board is absolutely clean and has no corrosion anywhere. The reason why it took me so long to reply is because I wanted to make sure there is nothing that I not checked as far as corrosions is concerned. Please advice further.

Hi Team, Today morning received a Macbook Pro with 820-3115 logic board. The customer complained that last night he was watching a movie and then it just shut down, so he thought it was the battery and kept it to charge the whole night, but the computer will not come on this morning. When the...