[Soekris] 4501 doesn't boot
ivanling at happy-connect.com
Wed Jul 30 09:07:31 UTC 2003
I have exactly the same experience with a net4511 board. After
unplugging/plugging the 5Volt power supply a number of times the board
died. I have a power over Ethernet power supply, but the behavior of the
board is the same. Both on external power and PoE the board does not
I have measured the 3.3Volt supply and its there. Also, as you describe,
the Ethernet chips and the processor seem to be running hotter than
normal. I have another 20 board from Soekris to compare. I have found
that cooling the CPU with cooling spray sometimes brings the board back
to live. But after a few seconds it dies again.
So I have declared my net4511 board officially dead... :-( unless
someone on this list knows how to fix this problem.
Kind regards, Ivo van Ling
From: soekris-tech-admin at lists.soekris.com
[mailto:soekris-tech-admin at lists.soekris.com] On Behalf Of Punky Tse
Sent: woensdag 30 juli 2003 10:09
To: soekris-tech at lists.soekris.com
Subject: Re: [Soekris] 4501 doesn't boot
Bernd Walter wrote:
> On Sat, Jul 26, 2003 at 12:13:28AM +0800, Punky Tse wrote:
>>Punky Tse wrote:
>>>After a series of plug-and-unplug of power for rebooting, my working
>>>4501 cannot be boot again. Could anybody know how could it be
>>>recover? What I can now see is that when I plug the power supply,
>>>both power and activity led are on. But by my experience, the power
>>>led would be on and the error led will also be on for a few
>>>seconds.... and there is no data come from serial port when I plug
>>>power. It seemed that I have broken my board. Anybody here has this
>>>experience before? I am very upset at the moment...
>>what I can find now is that Net1 and Net2 interface has both link and
>>act are on, and the three network interface chipset is very hot.
>>Anybody could offer help?
> The Ethernet chips get warm under normal conditions.
> You should first check if the voltages are OK.
> You can measure the 3.3V at L1 on the pin at the side located to the
> RAM chips, the other voltages and GND are available on JP9.
I am now declaring my 4501 board dead :-(. When I have a PoE adpater or
5V power supply on JP9, I will try again.
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