Search results

oh man it worked indeed !! Thank you very much @2informaticos (y)(y)(y)

ok thats cool it boots at least ) All tests were done with the mb outside the case, so normally all cables are already disconnected But i'll try again. What kind of usb activity should I expect ?

L7220/10 - 0.64V

Because I don't have fan spin, nor I have an image on external monitor. The monitor seems to detect HDMI output as a source, but external monitor screen remains black

oh okok then I do have it ))) Should the fans startup when plugin in the mb ?

Hey thanks for your support Ok I cleaned the oxidized area All four port have basically same behaviour : it goes up to 0.9amp then drops to around 0.37 amps and drawing 20.41V I don't see any damaged components, except that PP1V1 LDO pulls 0v instead of 1.1V on UB400,300 U3200,3100 here are...

Hey everybody I've got a 820-00239 with no power HISTORY : a customer brought this laptop with no power issue. He said that first there was image issue when moving the screen, but he was able to use it with an external monitor. After that, he said that the laptop stopped powering on at all...

Hey everybody I've got A1502 EMC 2678 Macbook pro which doesn't power on. I'm getting amber light when plugged in but no fan spin. HISTORY : customer dropped on flat surface. I tested with two different screens still nothing : no chime, no backlight, no fan spin. Here some measurements ...

just received new parts, the replaced was faulty indeed 😭 ALL GOOD NOW 😅 works like a charm Thank you 2informaticos Great support Feeling empowered by this forum 🙌

hmmm how is that even possible :cry: 😅 ok i did all that 3 times(no exaggeration) with exact same results (so we can exclude bad soldering) when original placed on U3200 and connected to upper port i'm getting correct voltages on all LDOs and getting 20V on that port when the replaced is on...

U3100 PP1V8_UPC_XA_LDOD - 1.8V / diode mode 0.47 PP1V1_UPC_XA_LDO_BMC - 0.00V / 0.50 PP3V3_UPC_XA_LDO - 3.3V / 0.49 PP1V8_UPC_XA_LDOA - 1.8V / 0.51 U3200 PP1V8_UPC_XB_LDOD - 1.8V / 0.48 PP1V1_UPC_XB_LDO_BMC - 0.00V / 0.51 PP3V3_UPC_XB_LDO - 3.3V / 0.50 PP1V8_UPC_XB_LDOA - 1.8V / 0.52 hmm...

Ok just received and installed a new CD3215C00 getting same reading as with CD3215B01 One port takes 20V the other one 5V, should both ports pulling 20V ? On u3200 now the readings are correct PP1V8_UPC_XB_LDOD - 1.8V / 0.48

C10G0/H1 - 0V L7900 - 1.008V L8060 - 1.002V

hmm that would be unfortunate How could that even be possible as I saw it boot and picture(no backlight) and now it doesn't even turn on ? couldn't it be a bad U7100 or U7210 ? getting all those: PM_EN_CPUVCC_R = 3.219V CPU_VIDALERT_L = 111 mV CPU_VCCST_PWRGD = 0.990V F7000 = 13V I...

L7370 - 1.05V L7730 - 1.06V 😅

not sure if have an image as see nothing L7210/20 - 0V

ok invested in some usb-c amp meter )) The board pulling 20V / 0.41A on both ports and CPU getting hot, so I suppose it boots The U8400 does have VDDD - 5V but no FB on pin 21 I do get 13V on Q8400 - pin 4 and 12.96V on pin 3 but nothing on Drain pins 1,2,5,6 is the Q8400 dead ? btw the...

loool PP1V1_UPC_XB_LDO_BMC - is U3200 (my bad) spent an hour reballing a foking wrong chip )) hahaha Placed CD3215B01 from donor and was getting 20V on one of the ports, the other one stuck at 5V Completely removed U3100 (donor chip) and back to 5V 0.2A Indeed is not the same code - needed...

will do )) I've got 820-00244 donor board it has u3100 CD3215B01 do you think it can fit ? From schematics look like the same

thanks for your reply U3100 PP1V8_UPC_XA_LDOD - 1.8V / diode mode 0.47 PP1V1_UPC_XA_LDO_BMC - 0.03V / 0.50 PP3V3_UPC_XA_LDO - 3.3V / 0.48 PP1V8_UPC_XA_LDOA - 1.8V / 0.51 U3200 PP1V8_UPC_XB_LDOD - 2.1V / 0.38 PP1V1_UPC_XB_LDO_BMC - 0.03V / 0.50 PP3V3_UPC_XB_LDO - 3.3V / 0.37 PP1V8_UPC_XB_LDOA -...