Hello, I have a lenovo idea pad 100-15iby with aivp1 / aivp2 la-c771p board that when I connect the charger, the battery charging led lights up and when I turn on the power led also lights up, examining the board I do not see nothing abnormal, in the bios I get 1.8v from what I see in the scheme it feeds from 1.8v, the EC gets 3.2v the ic heats up but very little it is hardly noticeable, this model does not have a fan, which if I notice is that the hard disk is not powered, because it does not spin.
Regarding the source, I always have the 5v because PL304 gives them to me and the 3.3v of PL302 as well, some sources I measure and I have no continuity except for the micro that is integrated.
I'll give you a photo of the board and tell you something quite strange that happens to me in pu1 that I see that it is powered, for example pin 1 and 4 has 20v but if I measure the source next to it I pass you measurements, the voltage of 158 is in off in on It goes to 169v but on the other hand it continues 11.3v. In the photo I put measurements too. As it is a laptop with a scheme a little different from the others, and also that I still can't interpret the schemes I would like you to give me a cable.
As a last test I have reprogrammed bios with the same result.
https://1drv.ms/u/s!AmqjExL54WT-hBsg...IsHF-?e=gvJcJP
Regarding the source, I always have the 5v because PL304 gives them to me and the 3.3v of PL302 as well, some sources I measure and I have no continuity except for the micro that is integrated.
I'll give you a photo of the board and tell you something quite strange that happens to me in pu1 that I see that it is powered, for example pin 1 and 4 has 20v but if I measure the source next to it I pass you measurements, the voltage of 158 is in off in on It goes to 169v but on the other hand it continues 11.3v. In the photo I put measurements too. As it is a laptop with a scheme a little different from the others, and also that I still can't interpret the schemes I would like you to give me a cable.
As a last test I have reprogrammed bios with the same result.
https://1drv.ms/u/s!AmqjExL54WT-hBsg...IsHF-?e=gvJcJP
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