@fmors yes the planned obsolescence is baaad. But Fernando, if you're interested in reviving it, I say: don't give up.
Mine looked completely dead... I managed to resurrect it by opening it, unplugging the battery and plugging it back in.
Then I found the original charging cable and kept it charging for at least a day...
Then I tried the combination of holding power + up volume (or maybe it was the down one?) for a long time and suddenly it powered up!