Bouncing an old thread here but the old man has been using my old LX3 since it was last repaired and had said it turned off with a puff of smoke not long before Christmas.
Took it apart and sure enough C23 had grown 5mm where it had popped.
The PSU PCB needed a good bath in IPA to get rid of the old crud (you can see some of it still attached to the old cap legs where it leaked).
I replaced both C23 & C24 (the 3300uf 10v ones) with Panasonic ones from eBay and she's up and running for a while longer now.