Hello my friend
Got this motherboard come to me with some interventions before
Interventions :
First mosfet PQ8901 and PQ8901
PR8938
PU8001
i find PQ8901 faulty change it all voltages are ok ( D/S/G )
Just re solder PU8001
the lap power on , reach amp 0.450 amp , no display and of course the consumption is not enough .
All voltages are present except
+VCCGT ( no pb for this )
+NVVDD 0v and +FBVDDQO for Graphic card.
U3001 :
96= PM_RSMRST# =3v ok
22 = BUF_PLT_RST# = 3v ok
68 = ALL_SYSTEM_PWRGD = 3v ok
PU8001 :
42 = IMVP8_PWRGD = 3v ok
PU8600 :
+2.5V ok
+VTT ok
SMB_DATA_S3 and SMB_CK_S3 ok
1.2V_PWRGD = 3v ok
BUT DDR4_DRAMRST# = 0.050v
Flash bios , uma conversion same issue .
Question about PU8901 , P_CHG_ACOK_10 = 6v ( same as P_CHG_REGN_20 voltage , no voltage divider !! ) i change it with BQ24780S same acok voltage !
What ivoltages i must verify too !!
Thank you
Boardview ---> https://www.badcaps.net/forum/showth...42#post1249442
Got this motherboard come to me with some interventions before
Interventions :
First mosfet PQ8901 and PQ8901
PR8938
PU8001
i find PQ8901 faulty change it all voltages are ok ( D/S/G )
Just re solder PU8001
the lap power on , reach amp 0.450 amp , no display and of course the consumption is not enough .
All voltages are present except
+VCCGT ( no pb for this )
+NVVDD 0v and +FBVDDQO for Graphic card.
U3001 :
96= PM_RSMRST# =3v ok
22 = BUF_PLT_RST# = 3v ok
68 = ALL_SYSTEM_PWRGD = 3v ok
PU8001 :
42 = IMVP8_PWRGD = 3v ok
PU8600 :
+2.5V ok
+VTT ok
SMB_DATA_S3 and SMB_CK_S3 ok
1.2V_PWRGD = 3v ok
BUT DDR4_DRAMRST# = 0.050v
Flash bios , uma conversion same issue .
Question about PU8901 , P_CHG_ACOK_10 = 6v ( same as P_CHG_REGN_20 voltage , no voltage divider !! ) i change it with BQ24780S same acok voltage !
What ivoltages i must verify too !!
Thank you
Boardview ---> https://www.badcaps.net/forum/showth...42#post1249442
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