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My laptop suffered a blown fuse and the backlight no longer works.

It's a common problem for my make/model and I'm piecing together the information to attempt a repair.

The fuse is the "Littelfuse" variety, 1206 32V 3A and shows no continuity.

As I don't really have professional equipment, aside from bridging the fuse with some solder, I'm thinking I might stack a replacement right on top and "replace" it that way.

Any advice or thoughts oh how this repair could most expediently be effected are most appreciated.

Edit: I caused the fuse to blow by not removing the battery while replacing the lcd. Stupid to think the power button was enough! A mistake I won't make again!

Excellll
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Alex Kessaris
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2 Answers2

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It's possible to remove it with one soldering iron. Add some extra solder to the pad at each end, the extra metal will retain heat longer. Go back & forth quickly with the iron, say 5-10 seconds each end, until both ends are molten at the same time. Apply gentle pull with tweezers at the same time, and when both ends are ready it will come away from the board.

You might heap enough solder on the part to bridge the two pads, so you have only one blob of solder to melt. Once the part is off the board, clean the pads with solder wick.

Alternately, the fuse is probably brittle and may crack in half if you push down on the middle of it. Then you can unsolder one half at a time to remove it from the board. Be careful not to apply so much force to the board that you damage traces or nearby components.

Matt B.
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Littelfuse is a manufacturer of fuses. The fuse can be replaced with any common soldering iron (smaller tip the better) as it likely isn't on a large copper plane. You can get the same type or similar fuse with a little searching. 1206 sized components are big enough that they are no problem to anyone with even a minimal amount of soldering experience. I have 1/8th Watt resistors that are physically smaller than 1206 surface mount ones.

cde
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