105 left shifter stuck

phy2sll2 Posts: 680
edited August 2011 in Workshop
I'm having some trouble with the left shifter (a 105 STI) on my Trek 1.7 (2008).

Coming up to a hill last night, I went to shift into the little ring and found the inner lever wouldn't move. I pushed it probably a bit too hard and it eventually shifted down, but from then on it wouldn't shift back up again.

If I pushed both levers in, I could get the chain on to the big ring, but there was no 'click' and the chain didn't want to stay there.

Anyone else experienced a similar problem? Does anybody have a spare shifter they'd like to lend / sell me?!