Hi ,I need boardview for model ms-7a68 ver. 1.0 Msi z270 tomahavk?Please can someone share?I dont have EN for CPU Voltage..

https://smd.db-x7.ru/load/boardview_mat ... 5-1-0-7521
вроде как 7b47 = 7a68

viewtopic.php?f=239&t=346&p=579854&hilit=%2A7b47%2A#p579854

Текстолит скорее одинаковый, ну а по схеме надо смотреть,схема на ms-7a68 есть.

VRM_EN -----Control from VCCIO_PG(12pin U31) ---SLP_S3_CTLR----SLP_S3#

thank you so much ..I draw voltage,please can you see?

SLP_S3# in 64pin nct6795d ---?
g1,g2 in Q21 --?

64 -3.3v
g1-3.3v
g2- 0v

U33 1,3,5 pin -- ? (check availability VCCsfr_oc).

1-3.3
3-3.3
5-1.2

Check Q60 .
Both transistors in this assembly(Q60) should be open, and on the G1 transistor Q61 should be 0, not 3.3V.

g1 -0.06v

Q61 --G1,G2,D2 --?

d2-2.8 g1-0v g2-0.06

U31 1,6,9,12,15 PIN ?

1-12v
6-0v
9-0v
12-0.018
15-12v

1pin=15pin=12v

D2 on Q61 is VCCIO_EN which goes to 15 PIN U31, 12V on it is a lot, there is an IOR4 divider -IOR5 300KOM --100KOM.It is very likely that the U31 has already burned down. Check ior4, ior5, U31, Q61.

15=2.8v i m so sory

Check the U31 replacement for good, as well as check all the elements of the binding U31.
Согласно выложенным замерам U31 ,похоже тапки,но необходимо проверить обвязку,желательно когда микросхема будет снята с платы.

i should remove and then turn on board and test?

This node may not work both because of the faulty U31, and because of the malfunction of the parts connected to the U31, this is iC1, ior1, ior2..6..12..13, also see if there is a short circuit on Iol1, if all proven The elements are working, we fall out U31 and check everything again without U31, since the faulty U31 could influence the accuracy of measurements. We solder the new U31 and check the presence of VCCIO = 0.95V.

Виновата может быть не только U31 , но и элементы обвязки, а так же к.з в нагрузке, так что надо все проверять на схеме и до и после замены U31.