So I have gotten 3 or 4 of those LED flashlights you find at places like smoke shops, grocery stores, etc. ranging from - each. Every single one of them eventually starts to develop a flicker to them, that usually goes away if I shake the flashlight. Is there anything that can be done to fix this, such as steel wool the inside casing for better grounding, re-soldering parts, etc? I would pull it apart but there is a metal ring preventing me from doing so in the part with the bulbs. Thanks
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