Hi,
I am trying to fix the motherboard on the HP MS21 All In One PC.
The charger light is showing on the motherboard.
When the power switch is pressed - a blue light flashes for a millisecond and goes off. This will not repeat unless you remove the charger and drain the circuit.
On checking the board I found the PQ39 in a melted state. So, I replaced it with a AO4466 (I didn't have the AO4468)...
No power is showing on the power switch.
On the PU7 - pin 6 has 19v and pin 4 has 3v
I am now stuck on what else I could check to find the problem.
I look forward to your help..
I am trying to fix the motherboard on the HP MS21 All In One PC.
The charger light is showing on the motherboard.
When the power switch is pressed - a blue light flashes for a millisecond and goes off. This will not repeat unless you remove the charger and drain the circuit.
On checking the board I found the PQ39 in a melted state. So, I replaced it with a AO4466 (I didn't have the AO4468)...
No power is showing on the power switch.
On the PU7 - pin 6 has 19v and pin 4 has 3v
I am now stuck on what else I could check to find the problem.
I look forward to your help..
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