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For some unknown reason this brand new extension cord is busted, many people would toss this in the trash at this point. I noticed that plugs kept slipping out of there sockets when in use, then the contact between the sockets and plugs would only allow juice to flow when positioned upside down WTF! At worst I could snip the splitter off and have a spare replacement or patch cable, apparently the problem is in the splitter.
Tools and Materials
Flat head screw driver
Cordless drill
3/16 inch heat shrink tubing
Pliers
Needle nose pliers
Utility knife
Heat gun
Two small screws
Step 1Open it
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This took around three minutes to pry open. I wedged pliers to into the gap and popped its seal, with only minor scratches on the exterior. The problem was a few loose contacts made from thin gauge copper (cheap), the emerging problem is how to put this back together. I decide to modify it just a little, with the addition of heat shrink tubing as reinforcement at its stress location nearest to the wire terminal. I'm only interested in repair, although the extra tubing should prevent stress, the plug end already has it. Here's a list of modifications possible.
Aesthetic sleeve or cable management system
turn switch
A different plug (flat, angled or industrial)
Permanent soldered wire terminals
See this
instructable for numerous ideas.