For an example case in the news recently, there is a discussion of recovery of data from the damaged recorders of
PR-GTD on pages 62 to 65 of the English translation of the Brazilian report posted on the NTSB site.
NTSB posting
Caution: this is a large file, slow serving site, likely a several minute download.
As others have suggested in this thread, in this case the means employed were decidedly low-tech in this instance, including the extremely ordinary soldering pencil being used in figure 23.