I'm not saying this would work for a flashlight, probab not, but
For the car, I'm so lazy I don't bother to make a solution, like I was
told to do. I just pour on the baking soda and slowly pour on hot
water until it stops bubbling. Then I figure I'm done.
I thought I had to remove the baking sode from the fridge in my NY
apartment when I left, as part of cleaning the place, so I took it with
me. Then there was another box in the fridge here. Since I ony use
the baking soda for absorbinhg odors in the fridge, which has some
special surface and never has odors., it took 25 years to use up the
firsrt box of baking soda, cleaning car batteries.
Now I'm on the second box. but I haven't used any yet.
The suggestions you received will probably work if the leakage is minor
but it sounds like you have a major mess on your hands.
The last LED flashlight I bought was only $3 or so, I would not bother
trying to fix it if it went bad
I did. Thanks.
Turns out there was another way to get to the affected parts: a
screw-out piece that took a pin wrench, but was not obviously removable
because of the corrosion. Strap wrench, pin wrench.... a little careful
torque, and I was in business.
Gave up on chemical means and just used a razor blade to physically
remove the corrosion that was obviously preventing a circuit. Was
surprised at how much of the aluminum went away when I scraped the
corrosion off - arguing for use of the proper chemical to reconstitute
the alu instead of just carving it away.
Tangentially, this light cost about thirty bucks at Lowe's over five
years ago. Just bought a box of three flashlights that are even
brighter at Costco for fifteen bucks total (i.e. $5.00 per flashlight)
and they even came with batteries).
Only feature of the old light that wins out over the $5.00 lights is
that the $5.00 lights take three AAA batteries and the old ones take a
couple of C batteries which gives them an extremely long life in use.
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