K8N riddle

  • Thread starter Thread starter Huub
  • Start date Start date
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Huub

Hi,

I have some problem I can't solve: a brandnew K8N motherboard, with
Sempron CPU and 500MB RAM, and a brandnew 300W PSU. At my place, the
onboard powerled burns. When I power-on the system, the CPU-fan runs for
a few seconds, then stops. The PSU connected to an old PentiumIII system
shows no problem: it just boots as it should. I took the K8N and PSU to
the retailer, had it connected just the way I did, and it runs without a
problem.

If anyone has/had a similar experience and solved it, please let me know
(and be so kind to tell me the solution :-))

Thank you.

Huub
 
Huub said:
Hi,

I have some problem I can't solve: a brandnew K8N motherboard, with
Sempron CPU and 500MB RAM, and a brandnew 300W PSU. At my place, the
onboard powerled burns. When I power-on the system, the CPU-fan runs for a
few seconds, then stops. The PSU connected to an old PentiumIII system
shows no problem: it just boots as it should. I took the K8N and PSU to
the retailer, had it connected just the way I did, and it runs without a
problem.

If anyone has/had a similar experience and solved it, please let me know
(and be so kind to tell me the solution :-))

Thank you.
Click to expand...


Seems to me like a shortcut when applying the board to you case. Check if
there are screws or spacers that touch the rear of the board. Likely a
spacer that is screwed in the mainboard plate of the case is at a position
where is no hole in the board to put in a screw. If this is the fact you
will shortcut the board. Check carefully. In some trays there is just a
little space between two screw. If you select the wrong one bang.

Frank
 
There is a second power connector on the board that you must plug into
with a special connector from your power supply. It is a square, 4-pin
socket. Only newer power supplies have them. You can buy an adapter
that goes from one of the disk drive connectors to this connector for
around $10. If this message seems new to you, then that's your problem.
I had the same problem until I read the manual.

Arnie
 
There is a second power connector on the board that you must plug into
with a special connector from your power supply. It is a square, 4-pin
socket. Only newer power supplies have them. You can buy an adapter
that goes from one of the disk drive connectors to this connector for
around $10. If this message seems new to you, then that's your problem.
I had the same problem until I read the manual.

Arnie
Click to expand...
Alas, all necessary power connectors have been plugged. The square plug
indeed was the case the very first time.
 
Seems to me like a shortcut when applying the board to you case. Check if
there are screws or spacers that touch the rear of the board. Likely a
spacer that is screwed in the mainboard plate of the case is at a position
where is no hole in the board to put in a screw. If this is the fact you
will shortcut the board. Check carefully. In some trays there is just a
little space between two screw. If you select the wrong one bang.

Frank
Click to expand...
To add to this: I connected the 350W PSU from another system to the K8N
and that boots the K8N as it should. So why doesn't the 300W PSU do that
while it should? Now I intend to switch the PSU's within a few days.
 
I had a similar issue years ago with a 486... long story. The mains voltage
at home was marginally lower, the PSU was struggling with the lower voltage
and havoc resulted.
 
Mercury said:
I had a similar issue years ago with a 486... long story. The mains voltage
at home was marginally lower, the PSU was struggling with the lower voltage
and havoc resulted.
Click to expand...
Thank for your answer.
 
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