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Siemens porche toaster TT911P2?

It has stopped working
The The rotary ring does not lock down
Dave, January 2009
I have the same problem. You could try the answer found here:
http://www.howtomendit.com/answers.php?id=138377

It didn't work for me, but maybe you have better luck.

rmf, January 2009
link Click here to see other fixes for Siemens.