Blown Ceramic Fuse Look Like

Another thing to check.

Blown ceramic fuse look like.

Blade fuses are sometimes physically difficult to pull out but most vehicles come with a fuse puller tool that is located inside one of the fuse boxes or attached to a fuse box lid. If you see any loose objects they might be the source of a short circuit. Look for a small square opening on the top of the fuse above each blade. If you just simply replace the fuse there is a good chance the fuse will blow again.

You need to test whether the ceramic fuse has blown. A homeowner can determine if a glass fuse in blown by performing a visual inspection and looking for a break in the thin wire and a brown discoloration in the center of the fuse. A ceramic fuse is built to withstand high temperatures. This is necessary for ceramic fuses since they don t develop a blackened appearance like blown glass fuses.

The film is formed when a short circuit melts the fuse element causing a deposit to be seen on the inside of the fuse barrel as a film. Testing a ceramic fuse is the only way to tell if the fuse has blown. Although it is fairly easy for a practiced eye to identify car fuses on sight you can also look at a visual guide to help determine which type of fuse you need to. The more thermally stable fuse is typically filled with sand in order to prevent the conductive film from forming.

To do this use a voltmeter ohmmeter. T2a250v f1a250v that s fuse rating t is for slow blow fuse and f for fast blow fuse 2a or 1a is amperage rating its usually just number and a 250v is voltage rating its number and v and then just measure the size of fuse in small electrical device is. Remove the fuse that you suspect to be blown and visually inspect the center element through the case. The melting action often causes discoloration of the case and the center element should have an obvious break.

A ceramic fuse however shows no damage upon visual inspection. Check one cap on fuse pcb or manual for fuse ratings there should be written something like. If the fuse is open then the next step is determining what caused the fuse to blow.