820-01521 ,a1932 stuck on 5.18v 0.22v

[layad]

hi there
one of the ports not showing anything on the meter , dead ( one next to screen)
othe port shows 5v , 0.22a
PP3V3_UPC_XB_LDO was shorted on u3200 , changed u3200 . now meter shows the same reading on both ports (5v , 0.22a)
all ldos are present apart of PP1V1_UPC_XB_LDO_BMC , its 0v on both no short
no dfu mode
PP1V8_G3S missing no short
u7650 enable signal is 0v no shorts
any suggestion?

[mon2]

Re: 820-01521 ,a1932 stuck on 5.18v 0.22v

Both CD3215 will need to be working before you can dial up the 20V power delivery contract.

Your case will be similar to this one:

https://boards.rossmanngroup.com/thr...an-spin.60765/

Inspect the USBC connector that does not show anything on the meter -> likely you will have USB C connector damage or contact faults. Review to clean with IPA and/or replace the paddle board and test again.

Check the LDO rail of each local CD3215 to see if the voltages are correct from each.

Are your CD3215 from a reliable vendor or are from a donor board ?

You can study this document as a general guide on when 20V is selected:

https://logi.wiki/index.php/CD3215_Bootup_Sequence