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Yep it is bad SMC got it working thanks

Any clue ??

This board won?t turn on at all . had no liquid damage , no sound when plug the charger . i get 3.3v on pp3v3 G3h 8.59v PPBUS G3H 3.3v pp3v3_s5 8.59v PPBUS S5 HS COMPUTING ISNS when plugged to charger cpu stay cold

https://youtu.be/0dxnrWWfqt4

Yes man this is true for new horrible design for every part in the Touch Bar one . screen , keyboard , board.....

Is that part of the horrible design on these screen !! no cracks or physical damage , screen goes totally black if bend more then 90 degrees. seen this on so many of these models !!

Then cpu barbecued !! fuuuuuuuuuu wasted whole day !!

When I disconnect the touchpad cable from board the fans start spin loud obviously because touchpad not connected but that’s mean board turns on !!! cpu cold

When plug charger !!

Did PRAM nothing change . cpu just warm bit even left for long time still not hot fans never spin after awhile . as I mentioned when plus the charger the ring sound never there . is there any pin need to check on the U7210 which I replaced .

No video on external and when I plug the charger never give me the ring sound that is charging speakers connected .

Battey and charger PPBUS 13.01 with battery only 12.50 v

This board has no liquid damage at all . the PPBUS-G3H was 0 v and shorting to ground . i found that U7210 was very hot when i injected 5v . took the U7210 then no more short At PPBUS. solderd new U7210 now I get 13.05 v at PPBUS with charger only and 13.01 with battery. pp3v3_g3h 3.410 no...

there no liquid damage involved or any physical damage . thr fan spin qurater spin then stop then again . got green light on the charger , PP3V42 is 3.49v PPBUS is 12.60 v ?

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Will run ASD and let you know .

Sorry I measured first time with charger . battey alone now is 95% charged , the voltage on PPBUS with battery only is 12.39 . these batteries works fine with other boards . when battery alone connected it is try to start and the fan spin second the stop .

I tried new battery it is not working with it . yes it charging the battery and percentage goes up fine but once disconnect the charger it is die . the PPBUS_G3H with battery connected is 12.61 v without battery is 12.60 v .

820-3115 had liquid damage around SMC area , works fine with charger but won’t work with battery only . SMC !!!

I am very happy because LOUIS got the Forums working !!! Had liquid damage , after cleaning the board there was no backlight , I did reflow the LP8550 then worked for 2 days then again no backlight , I replaced for new LP8550 but still no backlight , thought I might did bad soldering joint...