A2159 (820-01598) no power missing 5v 20v

[ronelex]

hi folks

I got this Macbook Pro A2159 that is no power. When I plugged in the charger with the ammeter, it wont glow s and no readings at all
I check the unit for some short on the PPbus but is is ok, PP3V3_UPC_XB_LDO on the CD3217 measures 50ohms

[mon2]

Re: A2159 (820-01598) no power missing 5v 20v

1) Post the voltage of PPBUS_G3H @ Fuse F7000, pin #2.

2) Post the voltage of PPDCIN_G3H. See attached for fuse locations.

3) What is the history of the unit ? Any liquid damage ? Check for possible corrosion on the logic board.

4) Are you using the original or recommended Type C power adapter for this logic board ?

5) The default output from the Type C adapter is 5 volts - do you see this voltage @ PPDCIN_G3H ?

[ronelex]

Re: A2159 (820-01598) no power missing 5v 20v

1) Post the voltage of PPBUS_G3H @ Fuse F7000, pin #2.
missing measures only 0.001V

2) Post the voltage of PPDCIN_G3H. See attached for fuse locations.
also missing measures 0v

3) What is the history of the unit ? Any liquid damage ? Check for possible corrosion on the logic board.
no signs of corrosion or liquid spill on the board, customer said they charged it on the generator power source

4) Are you using the original or recommended Type C power adapter for this logic board ?
yes

5) The default output from the Type C adapter is 5 volts - do you see this voltage @ PPDCIN_G3H ?
no it is missing

[mon2]

Re: A2159 (820-01598) no power missing 5v 20v

Post the voltage readings for

PP20V_USBC_XA_VBUS (with your power adapter connected)

and

PP20V_USBC_XB_VBUS

[ronelex]

Re: A2159 (820-01598) no power missing 5v 20v

Post the voltage readings for

PP20V_USBC_XA_VBUS (with your power adapter connected)

and

PP20V_USBC_XB_VBUS

this are 0v also, no short to the ground

[mon2]

Re: A2159 (820-01598) no power missing 5v 20v

Remove all power.

Confirm that the Type C paddle boards are firmly seated onto the logic board.

Assuming that they are, the details are pointing to a defective external power adapter.

Hope you can source another Type C power adapter and test it again. Post your results.

You do not have to use the Apple official power adapter - we are using the CUI brand Type C adapter for most of our testing but it will be practical if you can source a 60W or ideally 100W Type C adapter. This way, you can test anything from Apple (or other vendors) without concerns.

There should be many such power adapters available in your many local malls.

[ronelex]

Re: A2159 (820-01598) no power missing 5v 20v

Remove all power.

Confirm that the Type C paddle boards are firmly seated onto the logic board.

Assuming that they are, the details are pointing to a defective external power adapter.

Hope you can source another Type C power adapter and test it again. Post your results.

You do not have to use the Apple official power adapter - we are using the CUI brand Type C adapter for most of our testing but it will be practical if you can source a 60W or ideally 100W Type C adapter. This way, you can test anything from Apple (or other vendors) without concerns.

There should be many such power adapters available in your many local malls.

Thanks a lot sir, I will try to look for another charger or is it safe to use the one with PSU the 3 in 1 cable for macbook?

[mon2]

Re: A2159 (820-01598) no power missing 5v 20v

These rather recent models are all PD (power delivery) spec products.

It is important that the adapter & cables be compliant to this spec to support the required voltage & current combination.

I forgot to note the cable between the adapter & macbook.

There are 2 styles of PD cables, passive and there is active.

With the PASSIVE style, there are no electronics inside the cable and therefore are cheaper cables that can support up to 3A maximum. The wire gauge inside the cable defines this limit. If possible, consider a USB 3.x style which will offer fully loaded wiring that can permit high data transfer if you ever use the same cable in the future. For just power, USB 2.x style is good enough and will be cheaper.

So this means, if you buy a PD 3.0 (just an example) adapter and mate it with a passive cable, then you should be able to support 20V @ 3A. Confirm that the power adapter offers this combination of a power delivery contract. If not, shop around for a better model.

Now, when you mate a working adapter to the logic board AND the CD3215 / CD3217 chips are ALL working properly -> these 'ACE' controller chips will request from the adapter -> 'Send me a list of the power delivery contracts you can support' command. The adapter will reply with a table of values.

Then the macbook will select the 20V contract which will be @ 3A max (due to the passive cable style being used) = 60W to power the logic board. This probably should work fine but check with the Apple website on the recommended power adapter ratings. However, the logic board may work but will do so with perhaps a slower charge time for the battery.

For this reason, consider a beefier power supply (80W-100W if possible) AND purchase an ACTIVE USB Type C cable rated @ 100W. With this combination, the macbook can be powered with 20V @ 5A and allow for a faster charge time of the battery, support larger macbooks, etc.

There is a lot of garbage on the market on such cables -> prefer if you buy a MFI certified cable. Our company had about $50k USD of custom cables made and we paid Apple to then test the cables. Each of the raw materials are approved & blessed by Apple for the e-markers that are inside our cables. They restrict which cable shops are able to buy this raw materials and police the inventory. In the end, Apple lists our company name on their website as a MFI certified cable after their testing (another $2k USD for the testing fee). While we do not like the fees, it is comforting to know that the cables are certified to their rigorous specs. At the very least, you should consider a MFI approved cable but do confirm that cable and vendor are on the Apple MFI cable list (it is a free online check). We know for a fact that there are clone Apple e-markers in Asia and the vendor said so with a lower cable offer to win the business. Just a FYI.

For safety, suggest that you consider a PD adapter & MFI certified cable. The model you are working with will probably be just fine with a 60W adapter and a passive USB Type C cable.

If in doubt, post a link to the adapter / cable you are considering for a quick review. Arrow electronics carries the CUI brand which is a good one. Anker should be fine as well, etc. through Amazon or similar.

[ronelex]

Re: A2159 (820-01598) no power missing 5v 20v

These rather recent models are all PD (power delivery) spec products.

It is important that the adapter & cables be compliant to this spec to support the required voltage & current combination.

I forgot to note the cable between the adapter & macbook.

There are 2 styles of PD cables, passive and there is active.

With the PASSIVE style, there are no electronics inside the cable and therefore are cheaper cables that can support up to 3A maximum. The wire gauge inside the cable defines this limit. If possible, consider a USB 3.x style which will offer fully loaded wiring that can permit high data transfer if you ever use the same cable in the future. For just power, USB 2.x style is good enough and will be cheaper.

So this means, if you buy a PD 3.0 (just an example) adapter and mate it with a passive cable, then you should be able to support 20V @ 3A. Confirm that the power adapter offers this combination of a power delivery contract. If not, shop around for a better model.

Now, when you mate a working adapter to the logic board AND the CD3215 / CD3217 chips are ALL working properly -> these 'ACE' controller chips will request from the adapter -> 'Send me a list of the power delivery contracts you can support' command. The adapter will reply with a table of values.

Then the macbook will select the 20V contract which will be @ 3A max (due to the passive cable style being used) = 60W to power the logic board. This probably should work fine but check with the Apple website on the recommended power adapter ratings. However, the logic board may work but will do so with perhaps a slower charge time for the battery.

For this reason, consider a beefier power supply (80W-100W if possible) AND purchase an ACTIVE USB Type C cable rated @ 100W. With this combination, the macbook can be powered with 20V @ 5A and allow for a faster charge time of the battery, support larger macbooks, etc.

There is a lot of garbage on the market on such cables -> prefer if you buy a MFI certified cable. Our company had about $50k USD of custom cables made and we paid Apple to then test the cables. Each of the raw materials are approved & blessed by Apple for the e-markers that are inside our cables. They restrict which cable shops are able to buy this raw materials and police the inventory. In the end, Apple lists our company name on their website as a MFI certified cable after their testing (another $2k USD for the testing fee). While we do not like the fees, it is comforting to know that the cables are certified to their rigorous specs. At the very least, you should consider a MFI approved cable but do confirm that cable and vendor are on the Apple MFI cable list (it is a free online check). We know for a fact that there are clone Apple e-markers in Asia and the vendor said so with a lower cable offer to win the business. Just a FYI.

For safety, suggest that you consider a PD adapter & MFI certified cable. The model you are working with will probably be just fine with a 60W adapter and a passive USB Type C cable.

If in doubt, post a link to the adapter / cable you are considering for a quick review. Arrow electronics carries the CUI brand which is a good one. Anker should be fine as well, etc. through Amazon or similar.

thanks for this useful info sir