Here is a parts list, tech info, and region free procedure for the Aldi's Tevion DVD recorder, model "HDD DVD 160 MkII":

http://www.users.on.net/~fzabkar/DVD/DVD_HDD_160_MkII/

It has a Cirrus Logic Sonata chipset:

Cirrus Logic CS92689-CBZ DVD Encoder With DV Decoder (= Magnum Semi MS92689)

Cirrus Logic CS98301-CMZ decoder (= Magnum Semi MS98301 ?)