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I have Motherboard 820-3476, Board is working fine with battery or Direct with charger but If battery is connected then it's start blinking like cutting of power.
Replaced U7100 ISL6259, Checked R5380,R5381, No Corrosion so far.
C7090 was culprit, it was 100 ohm on diode mode and I didn't know it's bad. Sorry I didn't mention value on that Cap earlier.
Issue is solved and Board works like charm.
Thanks again for all your Help
Thanks for Help
On diode mode at L7095 no short to ground (it does not beep when I try to connect probe to ground)
Removed U7090 from Board, still new resistor blow out without it.
R7096 is about 181K
R7095 is about 360k
PPVIN_G3H_P3V42G3H is 0.65v with broken resistor and components removed.
I have 820-3437 Logic Board
As soon as I plugged charger to this Board, R7005 Blow out.
R7005 not short to Ground. I tested with New R7005 without D7005 it gives me roughly 20v on both ends. As soon I Install D7005 , R7005 blows out.
NO sign of Liquid damage on motherboard. PPBus_G3H is...
Client took Macbook to local computer shop, They replaced A1706 Screen on A1989 Model 2018, after replacing they realize screen model given was wrong, so they replaced back to A1989 Screen, Now screen is working fine, brightness is also controlling fine but after that Touchbar and...
yes it was corroded and replaced u7600, also Resistor Replaced R8185, No liquid spot found or corrosion anywhere else on board, U1900, U1950, U6100 Checked properly no corrosion.
Can somebody also explain. I am getting 3v on L7560 but not 5v on L7520. I did replaced U7501 but not sure when it...
Macbook Air not turning on
Liquid damage on U7600, Chip replaced but Still not power.
PP5V_S4RS3 0V Missing this Power Rail
Motherboard 00165 is not turning on
I used power supply and it is Consuming around .23amp
Missing Rail PP5V_S4RS3 so I don't have PP5V_S0
I checked u7500 and found Missing P5VS4RS3_EN_R at Pin 4, P5VS4RS3_PGOOD Pin 5 not sure if I need these to get chip turn on.
Repalced U7500 but no results.
I have 820-00165 Board, Macbook is running ok, just Fan is spinning at high speed. I don't know which asd to run on this model. I ran Hardware Test and it only shows Heatpipe 2 at 128 degree , Heatpipe outgoing air at 128 degree. No Corrosion near u5800, u5810, u5620. Any Suggestion please
As soon as I plugged battery to Motherboard, Chip U6990 at Pin 6 Sparked and chip dies
Replaced Already U6900 and D6905 , but still Noticed Resisteance at PPVIN_G3H_P3V42G3H at Pin 6 is 100Ohm only
Removed capacitor C6999 and C6990 but still low resistance.
Don't understand what should I try Next