I've a lamp which uses 12 bulbs of this kind, and I've very little knowledge about this kind of thing, so despite it seems feasible, I don't know what information I should look for, and what kind of LEDs (+adapter?) I should buy to replace the current ones.
The thing is that whilst current lights aren't cheap, they don't last long after opened, and I really mean it, some even are spoilt the day after, whilst they claim to last 2000 to 3000 hours (why does a light bulb stop working btw?)