help with B250m Mortar with MS-7A69 Board

chocouy

Member

Join Date: Jan 2024

Posts: 12

Country: Philippines
#1

help with B250m Mortar with MS-7A69 Board

01-21-2024, 07:45 PM

Hi everyone, I am trying to fix a B250M Mortar which doesn't power on, I have tested this with my old PSU which broke down while testing so I had to buy a new one which Im currently using now. I tested the ATX connector which only shows 5v, PS_ON# is active while ATX_PWR_OK is 0v. Power button 0v I am not too familiar with how to diagnose a desktop motherboard since I only do laptops for now, but I have checked coils and caps for short and have found nothing. I did bios reprogramming and didn't get any change. I have attached the BV and schematics, let me know if I need to check other pins.

46 3va-1 0.02v
85 3VA-2 0v
1 3VCC 0v
108 AVSB 0v
80 ATXPGD 0.01v
81 PWROK 0v
101 RSMRST 0v
61 PSIN# 0.01v
60 PSOUT# 1.21v
64 SLP_S3# 0v
84 SLP_S5# 0v
63 PSON 4.77v 1
05 VIN1 0v 104
VIN0 0v 116
ATX_5VSB/AUXTIN3/VIN7 0v
106 VIN2/VLDT 0v
107 VIN3/VDIMM 0v
26 PLTRST 0v

Things done:
reprogrammed BIOS
changed SIO chip (i have spare board)
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help with B250m Mortar with MS-7A69 Board

help with B250m Mortar with MS-7A69 Board

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