Aopen MX3L refuses to power on

[Guest]

Hello Everyone,

OS & Version = Win 2000
CPU Type = 466 Celeron
Motherboard = MX3L
BIOS/Firmware = R1.14
AGP slot = Viper TNT2 Ultra Vi(Diamond)
PCI slot = None
ISA slot = None

With ATX Power Supply, I switch on the PC using
the Power Button.

Machine powers up, but after 3 seconds it then
powers down. Sometimes after
pressing the button again it refuses to switch on at all.

However, If I was to directly connect the ATX Power connecter
directly to the MX3L Motherboard
(with the power switch on) it then powers up and behaves normally. This is
the only way that I can get it to power on properly (and is very dangerous!!)

I have disconnected everything from motherboard (except Celeron) and it will still switch off after 3 seconds when I press the power button on.

Ive even tried putting in a slightly older 250 watt power supply but the same thing happens. My current 300Watt power
supply is Pentium IV campatible and AMD Approved.

Can anyone help with this?

 

[girish]

probabely your system is overloaded, but the rig is not so heavy.

and

However, If I was to directly connect the ATX Power connecter directly to the MX3L Motherboard (with the power switch on) it then powers up and behaves normally. This is the only way that I can get it to power on properly (and is very dangerous!!)

you have to connect the power connector on the motherboard directly, and ATX power supplies need a pulse to get it working which is provided by the switch.

if the switch is closed then the power supply powers itself off immediately. i guess you have a bad switch that is latching on. did you try to use a jumper on the power switch pins (on the panel connectors) instead of the switch? just short the two pins for a while with jumper and remove it. if it works then you have a bad switch.

girish


<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>

 

[Guest]

Thanks for the info

I disconnected the ATX cable from the mobo and then put
a jumper on the power pins (where the Power cable goes) for
a few seconds. Then I removed the jumper and put the ATX cable back on. Is this the right procedure? Did'nt solve the problem.

Instead of connecting the power switch cable to the power pins I then put the reset switch cable to the power pins.
I then used the reset switch to power on but I still get
same old problems.

Any other ideas?

And what did you mean that my system was "overloaded"?