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Fast or slow blow? (no sniggering at the back please)


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Chaps,

Does anyone know whether a solid state amplifier typically uses a fast blow or slow blow fuse for the power supply?

The 4A fuse in the back of my vintage Denon occasionally blows upon powering up. It can go many weeks of use without doing this and never happens at any other time than at power up, which suggests that it is the power surge as the amp charges up that is tripping the fast blow.

Problem is it does not state whether the fuse should be fast or slow.

Cheers

Steve

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Now we’ve had the proper answer, may I be allowed to snigger at the back.

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Looks as though this is a re-occuring problem

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5 minutes ago, mr.me said:

Looks as though this is a re-occuring problem

That seems to be the plug fuse, not the internal 4 amp time delay fuse,  that I think Culture Crammer is referring to.

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7 minutes ago, greybeard said:

That seems to be the plug fuse, not the internal 4 amp time delay fuse,  that I think Culture Crammer is referring to.

oooops! must learn to read :D

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3 hours ago, toprepairman said:

It should be T4A (slow blow).

Brilliant, thank you. I thought as much but wanted to check before I blew anything up.

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3 hours ago, mr.me said:

Thanks, I had looked at that but was none the wiser!

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2 hours ago, toprepairman said:

Indeed, the manual would have you fit a 4A time LUG fuse, don't know where you'd get one of those but a time LAG should be easy.

That’s what threw me!

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