<div dir="ltr">On Mon, Feb 4, 2013 at 4:13 PM, John Watlington <span dir="ltr"><<a href="mailto:wad@laptop.org" target="_blank">wad@laptop.org</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im"><br>
On Feb 4, 2013, at 8:18 AM, Christoph Derndorfer wrote:<br>
<br>
> Hi again,<br>
><br>
> while investing why an XO-1 wouldn't charge I discovered that the 2A fuse near the power plug seems to have been blown and was "fixed" by someone simply soldering over it (see the attached photo).<br>
<br>
</div>Wow, first we've seen outside of torture tests! That fuse should only blow if someone tried to<br>
power the laptop with greater than +/-40V.</blockquote><div><br></div><div style>Yeah, it must have been quite something because the area around the fuse has been blackened...</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">
> Now I'm wondering whether there's anything to be done about that or if that's something that essentially can't be fixed in the field?<br>
<br>
</div>Solder down another small 2A fast blow fuse (3A for XO-1.5 or later).<br>
<br>
If a repair center found a blown fuse, I would also recommend checking the protective diodes<br>
D118 and D123.<br></blockquote><div><br></div><div style>Okay, thanks a lot for the information. Since I don't have the time to research where to buy such a fuse and then solder it in I'll just leave instructions here with the machine. Plus I already gutted that XO for spare parts so right now it's sitting next to me without a camera, antennas, battery, etc. ;-)</div>
<div style><br></div><div style>Thanks,<br>Christoph</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Cheers,<br>
wad<br>
<br>
</blockquote></div><br><br clear="all"><div><br></div>-- <br>Christoph Derndorfer<div><br></div><div><div>volunteer, OLPC (Austria) [<a href="http://www.olpc.at/" target="_blank">www.olpc.at</a>]<br><div>editor, OLPC News [<a href="http://www.olpcnews.com/" target="_blank">www.olpcnews.com</a>]<br>
contributor, TechnikBasteln [<a href="http://www.technikbasteln.net/" target="_blank">www.technikbasteln.net</a>]</div></div><div><br></div><div>e-mail: <a href="mailto:christoph@derndorfer.eu" target="_blank">christoph@derndorfer.eu</a></div>
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