MacBook Pro A1989 PP3V3 G3H short repair and MacBook Pro A1989 Charger not turning on USB-C meter repair: Difference between pages
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(Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== When charging the A1989 MacBook with a USB-C charger and measuring the input current and voltage with a USB-C meter, the meter does not even turn on at all or 0 current.thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *MacBook not turning on. *All voltages missing. *Not charging...") |
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{{Repair Guide | {{Repair Guide | ||
|Device= | |Device= | ||
|Affects parts= | |Affects parts= | ||
|Needs equipment= | |Needs equipment= | ||
|Type= | |Type= | ||
|Difficulty= | |Difficulty= | ||
}} | }} | ||
==Problem description== | ==Problem description== | ||
When charging the A1989 MacBook with a USB-C charger and measuring the input current and voltage with a USB-C meter, the meter does not even turn on at all or 0 current.[[File:Placeholder image.jpg|thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it!]] | |||
[[File:Placeholder image.jpg|thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it!]] | |||
==Symptoms== | ==Symptoms== | ||
*MacBook not turning on. | *MacBook not turning on. | ||
*Not charging | *All voltages missing. | ||
*Not charging. | |||
==Solution== | ==Solution== | ||
===Diagnostic Steps=== | ===Diagnostic Steps=== | ||
====Check PP20V_USBC and PPDCIN_G3H resistance==== | |||
==== | *Measure the resistance between PP20V_USBC and GND with a multimeter on resistance mode | ||
**if you read less than 50 ohms, you have a short, proceed to "Short on PP20V_USBC or PPDCIN_G3H" repair steps below | |||
*Measure the resistance between PPDCIN_G3H and GND with a multimeter on resistance mode | |||
==== | **if you read less than 50 ohms, you have a short, proceed to "Short on PP20V_USBC or PPDCIN_G3H" repair steps below | ||
If | ====Faulty USB-C port==== | ||
If both rails above are not shorted, it is highly likely that the USB-C port itself is shorted or damaged inside. | |||
===Repair Steps=== | ===Repair Steps=== | ||
====Short on PP20V_USBC or PPDCIN_G3H==== | |||
==== Short on | [[How to find short circuits]] | ||
Replace the shorted | *Inject 1V to the shorted rail using a Lab Bench Power Supply. | ||
**With a thermal camera, identify the source of the short, most likely it is a capacitor | |||
==== | *Replace the shorted component. | ||
====Shorted USB-C port==== | |||
Replace the offending port. |
Revision as of 14:44, 14 October 2023
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MacBook Pro A1989 Charger not turning on USB-C meter repair | |
---|---|
Device | |
Affects part(s) | |
Needs equipment | |
Difficulty | |
Type |
Problem description
When charging the A1989 MacBook with a USB-C charger and measuring the input current and voltage with a USB-C meter, the meter does not even turn on at all or 0 current.
Symptoms
- MacBook not turning on.
- All voltages missing.
- Not charging.
Solution
Diagnostic Steps
Check PP20V_USBC and PPDCIN_G3H resistance
- Measure the resistance between PP20V_USBC and GND with a multimeter on resistance mode
- if you read less than 50 ohms, you have a short, proceed to "Short on PP20V_USBC or PPDCIN_G3H" repair steps below
- Measure the resistance between PPDCIN_G3H and GND with a multimeter on resistance mode
- if you read less than 50 ohms, you have a short, proceed to "Short on PP20V_USBC or PPDCIN_G3H" repair steps below
Faulty USB-C port
If both rails above are not shorted, it is highly likely that the USB-C port itself is shorted or damaged inside.
Repair Steps
Short on PP20V_USBC or PPDCIN_G3H
- Inject 1V to the shorted rail using a Lab Bench Power Supply.
- With a thermal camera, identify the source of the short, most likely it is a capacitor
- Replace the shorted component.
Shorted USB-C port
Replace the offending port.