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Question:

A 3a device run with 13a fuse, has this been harmed?

I bought a bargain DAB radio, when I got it home it ran fine, then seemed to keep cutting out, would run finerepeat.Something suggested the power might be to blame, looked at the fuse, the plug is labelled 3amp, but someone had put in a 13 amp fuse. Will the radio be damaged through running with the wrong fuse?As I say, I paid a very bargain price for this, so if I'm gonna get a year or so's use, I'm happy enough. Not expecting too much anyway, and quite lazy about taking it back. But if it's going to be a useless lump by this time tomorrowCheers for any advice

Answer:

it depends whether or not the radio received more 3 amps. if it did it is most likely ruined as normally the fuse will have stopped this happening. my only advice is to put the correct fuse in the radio and try it then if it still does not work it was ruined.
The larger fuse alone will not cause damage, but together with another problem may. My guess. What ever is causing the radio to cut out, was also causing a 3 amp fuse to blow. That's why the previous moron I mean owner replaced it with a higher value. I would be concerned that something is overheatiing and shutting the unit down. It's only a mater of time before it doesn't come back on after cutting out.

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