-
For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.Subscribe Now
Macbook 820-00239 Charging Port Issue
- Thread starter Instafixx
- Start date
Check diode mode to ground on CC1/2 lines of non working port.
Compare diode mode readings around corresponding CD3215 chip with other good port.
S-UEM2 helps you in this case:
sofixshop.com
Compare diode mode readings around corresponding CD3215 chip with other good port.
S-UEM2 helps you in this case:
S-UEM2 Mac USB-C and EDP meter
S-UEM2 is a tester for USB-C and EDP connector of MacBook logic board
sofixshop.com
Check diode mode on other lines of CD3215.
If you salso get strange readings, then bad chip.
If not, may be a protection diode, or capacitor; connected to CC1 line.
But CC2 is also low, so very likely bad CD3215...
If you salso get strange readings, then bad chip.
If not, may be a protection diode, or capacitor; connected to CC1 line.
But CC2 is also low, so very likely bad CD3215...
Did you check corresponding diodes and capacitors?
So it turns on with charger, or battery alone, but not with both connected at same time?
Instafixx
Active member
Battery + Charging without LCD - Machine turn on (I can hear the chime.)
Voltages SDA is 3.3V. SCL is 3.3V
Charging + LCD without Battery - Machine turn on
Voltages SDA is 2.8V. SCL is 3.3V
Battery + Charging + LCD Connected - Machine will not turn on.
Voltages SDA is 3.3V. SCL is 3.3V
No FAN SPIN in all scenarios.
Tried SMC Bypass and Safe Mode as well.
Voltages SDA is 3.3V. SCL is 3.3V
Charging + LCD without Battery - Machine turn on
Voltages SDA is 2.8V. SCL is 3.3V
Battery + Charging + LCD Connected - Machine will not turn on.
Voltages SDA is 3.3V. SCL is 3.3V
No FAN SPIN in all scenarios.
Tried SMC Bypass and Safe Mode as well.
Last edited:
Instafixx
Active member
Replaced U6903 as it was getting mildly hot. Now I get fan spin. It turns on now at customers old battery but shows 1% and battery is not charging. the old battery swollen.
On a new battery it wont turn on as before. one thing I noticed that on a new battery the amp meter goes straight to 20V. not 5v then 20V.
Fan spins and then stops.
Is it still a CD3215 issue ?
On a new battery it wont turn on as before. one thing I noticed that on a new battery the amp meter goes straight to 20V. not 5v then 20V.
Fan spins and then stops.
Is it still a CD3215 issue ?
Last edited:
Shouldn't be CD3215 issue, if turns on with original battery.
That battery may be just locked.
Harald's battery tool may unlock it.
That battery may be just locked.
Harald's battery tool may unlock it.