monkey
08-07-2001, 03:52 PM
In short:
During an internet session, my Presario 5461 rebooted and then stopped operating altogether. The power light is on, but he does not respond to pressing the soft power button.
In detail:
When I plug in the power cord, the power light comes on and the fan in the power supply starts spinning. The fan on the CPU is not spinning, there is a light burning inside the HD, but the HD busy light does not come on. I get nothing on my monitor. If I press the soft power switch, nothing happens. I can not get it to switch off either. The fan(s) are by far not as noisy as they used to be. After a minute or so the power drops out.
What I tried:
The Presario 5461 has a SFX style power supply. I measured the voltages on the MOLEX, all signals are there, except for the PS_ON on pin 14, also not when I press the soft power switch. I measured the switch, but that seems to be fine. I disconnected all periferrals, cleaned the interior and checked that all connectors and the CPU are properly seated. No results.
Is this a motherboard problem? Should the fan on the CPU (AMD K6-2 500 Mhz) rotate as soon as power is on?
During an internet session, my Presario 5461 rebooted and then stopped operating altogether. The power light is on, but he does not respond to pressing the soft power button.
In detail:
When I plug in the power cord, the power light comes on and the fan in the power supply starts spinning. The fan on the CPU is not spinning, there is a light burning inside the HD, but the HD busy light does not come on. I get nothing on my monitor. If I press the soft power switch, nothing happens. I can not get it to switch off either. The fan(s) are by far not as noisy as they used to be. After a minute or so the power drops out.
What I tried:
The Presario 5461 has a SFX style power supply. I measured the voltages on the MOLEX, all signals are there, except for the PS_ON on pin 14, also not when I press the soft power switch. I measured the switch, but that seems to be fine. I disconnected all periferrals, cleaned the interior and checked that all connectors and the CPU are properly seated. No results.
Is this a motherboard problem? Should the fan on the CPU (AMD K6-2 500 Mhz) rotate as soon as power is on?