A1932 820-01521 only 5V

[hgoncalves]

Hi.

I have an A1932 820-01521 only 5V, and only in when connected with one USBC side cable.

All LDO and CC1/2 have the correct diode readings.

Can you help?

 

[2informaticos]

What is the behavior of the other port?
Any history availale?

Inspect USB-C terminals for corrosion.

 

[hgoncalves]

Now, in one port, and only in one usbc cable side, it powers on (U3100).

On the other port, I have a black ampmeter on one side of cable, and , stays at 5V on the other side of USBC cable.

I've replaced U3200 but still have the same behavier.

 

[2informaticos]

You should have problems with CC1/2 lines corresponding to U3200.
Check them in diode mode, before and after Q3450/60.
Also check continuity with J3300.

 

[hgoncalves]

The18th pad of U3200 was missing. I think that it should not be critical, because it has other 3 for PHV_INT_XB_G3H. Am I correct?

I've used an CD3215C00 when the original one was an CD3215C00Z. Is that relevant?

 

[2informaticos]

C00 should be good enought to respect.
Charger detection is done through CC1/2 lines.

The missing pad is not relevant here.

 

[hgoncalves]

Hi.

I've replaced again both CD3215, and now, on the U3100 port, the Mac powers on normaly using both sides of cable.

On the U3200 port, on one side of the cable, the ampmeter stays black, and on the other USBC cable side, it stays at 5V.

CC1/2 have 0.560 on diode reading in both CD3215

 

[2informaticos]

Check them on both sides of Q3450/60, not just to the U3200 side.

 

[hgoncalves]

Hi.

I've replaced Q3450/60 and solved the problem.

Mac powers on again normaly.

TKS