[En-Nut-Discussion] FW: Ethernut 1.3 Rev-H dead?

[Nedim Z]

It was, of course, the fuse. I bought a new one, and replaced the blown one.
Thanks for all the kind help. 
Best regards
Nedim

> Date: Thu, 14 Mar 2013 16:16:21 +0800
> From: huayuliang at gmail.com
> To: en-nut-discussion at egnite.de
> Subject: Re: [En-Nut-Discussion] FW: Ethernut 1.3 Rev-H dead?
> 
> Hi Nedim,
> 
> how did you power supply connect to your board? POE?
> check the voltage of MEGA128 first plz...
> if any chip is destroied by overvoltage, it will be very
> apparenttemperature rise, but not all.
> 
> the shared reset pin of mega128 maybe fixed level. if your JTAG device is
> bad or not in proper operating condition. you may should unplug your
> JTAGICE from your 1.3H board.
> 
> 2013/3/14 JP Merle <jpmerle2010 at gmail.com>
> 
> > Before you replace the 1A fuse, I suggest you check it with a multimeter
> > (ohm-meter) (no need to take it out from the Ethernut card).
> >
> > Best regards
> >
> > Sent from my iPhone
> >
> > On Mar 13, 2013, at 4:38 PM, Harald Kipp <harald.kipp at egnite.de> wrote:
> >
> > > Hi Nedim,
> > >
> > > On 13.03.2013 16:19, Nedim Z wrote:
> > >
> > >> After pressing the reset button on my Ethernut 1.3 (Rev-H) while having
> > a a crossover ethernet cable, a JTAGICE MKII (turned on) and a serial cable
> > to the RS232 connected, the device seemed to stop working. Now, it does not
> > power on. I was in Tera Term, trying to get BaseMon running. I had not
> > flashed or programmed anything on the ATMEGA 128 yet, meaning that the
> > setup was factory settings.
> > >
> > > May be a short cut somewhere? For protection, Ethernuts are equipped
> > > with a very sensitive fuse.
> > >
> > > Remove all external hardware and replace the fuse. egnite ships all
> > > boards with a spare one. If no longer available, here's the part#
> > >
> > > Littelfuse 0453 001, 1A fast
> > >
> > > Hope this helps,
> > >
> > > Harald
> > >
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> >
> 
> 
> 
> -- 
> Best Regards
> YuLiang Hua
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