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Okay so SMC_LID is 4.5v DC-IN board connected 2.5 with DC-IN board connected pulsing with charger plugged in confirmed backlight is going out with charger connected. changed smc lid pull up resistor but same problem. 3v4 G3H remains constant (Good)

I will check you suggestions tomorrow and get back to you

Turns on with battery but as soon as you plug in the charger the screen goes blank but fans keep spinning. When I unplug the charger the screen comes back on. If I leave the dc in connector plugged in but disconnect the I/0 connector flex then we don’t get the problem and will get lightning...

Hey folks, I have a weird problem with an 820-00165 board. When I plug in the MagSafe the backlight and LCD go out (I am guessing it goes in sleep mode). Unplug the charger and it’s back up. Also good to note that there is no light on the MagSafe. I have tried a new I/o board and connecting...

excuse me if i’m a newbie but i’m getting the hang of these type c boards

okay i was looking at the diagram for ppbus_g3h as it is missing . I see dc in goes into the mosfet q7030 and is output as the gates which go to isl u7000. Just to see i changed the mosfets but still no output on the gates. I see these gates run to u7000, could it be u7000 causing the lines to...

Hey I am problems with a 820-01700 board. Came in no power found that PP3v3_g3h_ssd0_sns was shorted. Found the short at c9500. removed and system booted. Amp meter on the charging port was reading 20v at 70amps and not charging so immediately I knew there was a problem. Took it down and did...

R7022 and r7021 shorted to ground. I see both run to r7030 I believe. Don't have schematic on me. I will check it in the morning

so essentially no PPDIN_g3H where do I look

nevermind only the A mesurements will be right as the side it is plugged in. dumb question

All ports have same behavior but anos at 5,47 which is a little high. let me give some more details PP20V_USBC_TA_VBUS 20v PP20V_USBC_TA_VBUS_F 20v PPDCIN_G3H missing PP20V_USBC_TB_VBUS missing PP20V_USBC_TB_VBUS_F missing Could it be the B controller?

HEy I am working on a 820-00281 with no power. So usb meter was sticking at 5v with 32amps when i started. Noticed corrosion on CB300 which is PP3v3_G3H. Removed that cap and now I get 20v (sometimes at 1.4 amps, sometimes at 14amps or sometimes at 5 amps. PPDCIN_G3H is missing...

I am guessing something on the charger side because I have constant voltage on battery.

C7140 is fluctuating with the F7140 removed

after taking the efi off, cleaning and added fresh solder i have fan spin again out of frame but still fluctuating g3h

17/18 is 3 ohms 27/28 is 20.5 ohms

Hey guys, I have a 820-00164 which is giving some problems. Okay so originally it came on with no wifi (not turning on). I checked and PP3v3_WLAN was only 2.64v. I tested this with board still in frame. Took it out the frame and saw corrosion around L4605. Cleaned that and the system wont boot...

Thank you, so do you have any other suggestions 2informaticos ?

So would the crud around U7100 cause anything. its EXTREMELY minor and can only be seen under the scope but there. I went ahead and did a beep test to check short to ground. I have beep on: CPU_VCCGTSENSE_P CPUCORE_ISUMN CPU_VCCSENSE_N Are these suppose to beep due to low resistance or are...

Around U7800 looks clean SMC_PM_G2_EN = 3.4v PP3V3_PMICLDO = 3.3v