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ASUS AM4 b450m motherboard cannot be powered on for repair
Motherboard model: ASUS AM4 b450M motherboard
Fault phenomenon: main board Won’t Turn On
Maintenance process:
An AM4 b450m motherboard, boot does not run code, measurement of each big VCC.
ASUS AM4 b450m motherboard cannot be powered on for repair Figure 1.
SOC VCC
ASUS AM4 b450m motherboard cannot be powered on for repair Figure 2.
CPU VCC
ASUS AM4 b450m motherboard cannot be powered on for repair Figure 3.
There is no CLK measured.
ASUS AM4 b450m motherboard cannot be powered on for repair Figure 4.
No reset.
ASUS AM4 b450m motherboard cannot be powered on for repair Figure 5.
Measuring the PWR of CPU_Good signal.
ASUS AM4 b450m motherboard cannot be powered on for repair Figure 6.
This PG is sent out by IO, and VCC is detected by measuring IO condition 5V, but there is no VCC.
ASUS AM4 b450m motherboard cannot be powered on for repair Figure 7.
Change the resistance.
ASUS AM4 b450m motherboard cannot be powered on for repair Figure 8.
PG,CLK, reset.
ASUS AM4 b450m motherboard cannot be powered on for repair Figure 9.
ASUS AM4 b450m motherboard cannot be powered on for repair Figure 10.
Power on,Normally booting up!
ASUS AM4 b450m motherboard cannot be powered on for repair Figure 11.
