A1XE : cpu fan not running, no video output

[Herewegoagain]

First and formost, try a different power supply.  I've seen this happen on PC's many times where the system powers on, the leds light up, but no video and no "post beeps"... Usually changing the power supply will take care of it.  Although, it could be signs of something even worse....

Also try to reseat your AGP card, as most AGP slots require an extra push to get the card seated all the way down (not with excessive force though).  It may look like it is inserted, but may not be seated completely down.  That will also cause no video, but shouldn't make the cpu fan not turn.

[Framiga]

by lionstorm on 2003/7/14 8:37:14

I received my board 1 month but lack a strong psu so now I got it but at power, the cpu fan does not spin and there is no video output from my AGP radeon 7500. But the green led on the moterboard is working. How do I continue ?
Lio

For the fan cooler, try to check the right polarity of the connector:

http://www.soft3.net/pages/amigaone-guide-1.php

Ciao

[Terminills]

Check the voltage switch on the back of the psu ... most have one near the main power switchon the psu..

[Athlon]

I will only use Antec or Enermax power supplies as too many cheapos out there that don't cut the mustard as far as voltage variations go... Get a 300 watt or better !!! 8-)

[th4t1guy]

First thing I'd check is that your RAM stick is in the correct slot.  Make sure it's in the first slot, and not the second.   Next, make sure that it's seated all the way.  Next, check the connection for your CPU and the CPU fan.  If the fan is not spinning, touch the heatsink while you turn it on to see if it warms up (should heat up rather quickly).  If it doesn't heat up, then either your RAM is bad (or incompatible), your cpu is bad, or there is a problem with the power connection from your power supply to your motherboard.  I haven't seen the AmigaOne yet, but check for a 4-pin mobo connector (common feature on p4 motherboards).
If the light is on for your motherboard, and if you turn on the power supply, and you can hear it running, then most likely it is not the power supply.  Try plugging your computer into the power supply, turn on the power supply, and move around the connector to see if you can get anything to power up.

[Tomas]

Did you connect the power button properly? even without ram, hds, fans and such should spin.

There is usually a light on mobos that will be lit even without pressing the power button, enough to have the psu hooked up.

[Tomas]

lionstorm wrote:
@ agafaster : yes I checked jumpers and etc several times. Do I expect a video output without the ram plugged ?
Lio

No video output but fans should spin up and will make a few beeps if pc speaker is hooked up.

[lionstorm]

no beep at power on but could be I did not connect right the speaker. Ram should be ok since it is registered kingston. The fan cooler on the graphic card (ATI radeon 7500) is spinning but no the cpu fan cooler. I don t now how to take it out otherwise I would have done it and checked it by connecting it to a pc motherboard. Also plugged HD and DVD (only power, not the ide cable) but this does not help. Why this expensive peace of hardware does not work ?? I am very frustrated.
Lio
 

[DaveP]

Hey look Lando, more evidence of Articia-S bugs!!!!!

 :-P

[tonyw]

It's a developer's board, so you should have some developer's tools. Like a multimeter. Check the power rails on the ATX connector. With the power connected to the PSU but turned "off", you should have +5 V on the "+5 V SB" pin and on the "PWR ON" pin. When you connect the "PWR ON" pin to ground with your front panel switch, the power supply should start up and provide all the other voltages (Main +5V, +/- 12V, 3.3V). The fan should have +12V on its red wire and 0V on the black, as described in the startup guide.

tony
 

[lionstorm]

It's a developer's board

Really ? I thought I ordered a consumer/normal one only for user not developer. The only special thing is this earlybird, related to amigaOS4.
No multimeter here, I guess I have to ^find one.
Lio

[Fot]

Hi Lionstorm,

As mentioned by Herewegoagian, did you ensure that the AGP card is inserted all the way down. Most need a little extra force to be inserted properly.

Does the hard drive spin up when the IDE cable is disconnected from the system board?

[lionstorm]

Yes the AGP gfx card is in, and the fan cooler on it is spinning !
IDE HD is spinning as well at power on.
Lio

[lionstorm]

@vortexau :
is the ram not auto detected ? if not where do I tell the A1 how much memory I plugged (did not find something in the manual)?
Lio

[tonyw]

The memory is auto-detected.

What type of video card do you have?

tony

[lionstorm]

@tonyw : video card is ATI radeon7500LE.
Lio