[Soekris] 4501 doesn't boot

Bernd Walter soekris-tech at cicely.de
Sun Jul 27 09:27:50 UTC 2003

On Sat, Jul 26, 2003 at 12:13:28AM +0800, Punky Tse wrote:
> Punky Tse wrote:
> >Hi all,
> >
> >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 the 
> >power.  It seemed that I have broken my board.  Anybody here has this 
> >experience before?  I am very upset at the moment... 
> >Punky
> 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.

B.Walter                   BWCT                http://www.bwct.de
ticso at bwct.de                                  info at bwct.de

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