Hi,
What i suggest you is to download Xenu link sleuth. This software has major competence to hunt up broken links and list them by the URL location.
Thanks
Zoli

erm of course a 404 link won't be 'there'.

you should use something like A1 sitemap generator - for any given page/url, you can view 'linked by' and see where the incorrect strings are composed.

_edit_ had not seen the above reply sorry.