820-00165 charging problem

[bartech]

when i get this macbook it want start there was short on c7430 and broken r 7006 , i change them and it start working but when i connect charger lcd backlight stop working when i disconect it lcd back to normal , i change U7100 and u 7701 , reset smc and still the same...

 

[iremont]

Change charging port for check

 

[2informaticos]

Be sure to use original Magsafe 2 charger.
Try known good LIO board/flex.
Check SMC_LID level.

Just in case, do 2-3 times PRAM reset.