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ok i fix the problem...there was two lines in u4810 with traces broken....pin 1,5,6 0.0v because traces broke.....fix it... now keyboards is working again thamks you very much

ok correccion... i get a usb keyboard. login in to os x with usb keyboard and TP/KB dont work KB/TP dont work before and after login os x...dont work to enter boot menu

I have measured something in j4800 ... pin 2 tpad_spi_miso_r is 0.0 v .. this pin is output ... shouldn't it measure 3.3v?

Although it seems incredible, I do not have a USB keyboard here now .... I am on vacation ... but I have used an arduino per USB configured as a keyboard ... and if the arduino writes in the login

sometimes I can see the light of the shift keys before login ... I have even been able to type in the login but I have not been able to enter the boot menu by pressing the alt key...now it doesn't work anymore

ok same news.....i apply hot in pch with air station at 180º and flux amtech.......now fan spin chime and boot in to os there is another problem in the logicboard... no keyboard and tradpad i probe another good keyboard and flex cable and tradpad but nothing....any idea pleased

hi... iam tryning repair a 820-00165 with water damage....i fix green orange light chande smc and J9500 with corrosion, now i have a nice green-orange in the charger.... ppbus_g3h. 8,59v pp3v42_g3h. 3,42v pp3v3_s5. 3,3v pp5vs4rs3. 0.00v pm_slp_s4_l 0.00 v no short to ground....when...

another notice.....when i do a pram the macbook install osx and boot correctly...but but after a while using it it turns off again due to overheating

another notice.....when i do a pram the macbook install osx and boot correctly.. but after a while using it it turns off again due to overheating

is posible bios problem....?

resistance between pins 17/18 3.3 ohm SMC_BMON_ISENSE 0.052 V "with charger and battery connected "..... 0.071 v only with charger CHGR_BMON 0.050 V "with charger and battery connected ".......0.069 v only with charger PPBUS_G3H 8.50V only with battery .....8.56v with battery and charger

when disconnect the charger the fan come back to 1200 rpm

i install osx high Sierra without battery...when finish I plug in the battery and boot up the system....I load the hwmonitor...with battery installed and magsafe connected... now the fan is spinning 5100 rpm....I can see that air flow temperature is very high 128

en istat hay un valor que no marca nada que es air flow

yess...dont overheat without battery and install osx correct.....install hwmonitor and istat .... in hwmonitor there are three strange values..heatpipe 2, heatpipe incoming air and heatpipe out going air , all 3 mark 130 º

hola buenos tardes....estoy trabajando en un macbook air 820-00165 2017 con sobre calentamiento..el mac funciona correctamente salvo cuando se instala sistema operativo... el ordenador se apaga a mitad de instalacion muy caliente....he echo alguna prueva .....si arranco pulsando D la diagnosis...