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Versão atual de: zzz ,

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Ok what's next? Cleaning corrosion or resetting SMC???? Resetting SMC fixes water damage like hitting your car fixes dead battery, so let's move onto what makes sense.
 
Ultrasonic the board, or clean it as best as you can, and measure what you get on every pin of D7005. You should see charger voltage on all pins. Then measure pin 2 of U7000, should be the same thing.
 
Then measure CHGR_ACIN pin of U7000, should be 3.7v to 4v.
 
After all of this I am sure you will want to measure R7020/R7021 and R7051/R7052 and the traces to the shunt resistor for current sensing, and the traces from those to U7000.
 
Also what does onewire section look like? Onewire circuit is insane on these boards. Start easy measuring pin 14 of U7000 and see if you get 2 to 3 volts there and we will continue.
 
Do homework and come back with results.
 
Oh also of course this six year old POS battery is dead.

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open

Postagem original de: zzz ,

Texto:

Ok what's next? Cleaning corrosion or resetting SMC???? Resetting SMC fixes water damage like hitting your car fixes dead battery, so let's move onto what makes sense.

Ultrasonic the board, or clean it as best as you can, and measure what you get on every pin of D7005. You should see charger voltage on all pins. Then measure pin 2 of U7000, should be the same thing.

Then measure CHGR_ACIN pin of U7000, should be 3.7v to 4v.

After all of this I am sure you will want to measure R7020/R7021 and R7051/R7052 and the traces to the shunt resistor for current sensing, and the traces from those to U7000.

Also what does onewire section look like? Onewire circuit is insane on these boards. Start easy measuring pin 14 of U7000 and see if you get 2 to 3 volts there and we will continue.

Do homework and come back with results.

Status:

open