AD30 Blown HT Fuse - What are the specs?

amonte33 · Post by **amonte33** » Fri May 12, 2017 3:02 pm

I've got an AD30 Combo amp that I've owned for a year now. It worked great up until yesterday when I suddenly had no audible sound. Upon further reading and investigation, it appears that the HT Fuse is blown. I know this is a 500mA fuse, but is it Slo Blow? 250V?

Would something like this do the trick?

https://www.amazon.com/10Pcs-250V-500mA ... 2470955011

amonte33 · Post by **amonte33** » Fri May 12, 2017 3:03 pm

Also, should I go ahead and get a new rectifier and/or power tubes or is it possible that simply changing the fuse will suffice?

Jondog · Post by **Jondog** » Fri May 12, 2017 4:20 pm

Usually the fuse blows because there's an issue. I use fast blow.

amonte33 · Post by **amonte33** » Fri May 12, 2017 11:52 pm

OK thanks, I'll try a tube swap and a new recto.

Is 250V correct?

Post by **bclaire** » Sat May 13, 2017 3:45 am

Depends on where you live and what the voltage is.

It really helps if you add your location to your profile...

a.hun · Post by **a.hun** » Sat May 13, 2017 10:19 am

bclaire wrote: ↑
Sat May 13, 2017 3:45 am
Depends on where you live and what the voltage is.

It really helps if you add your location to your profile...

HT fuse value doesn't change with different mains voltages, only the mains fuse.

But yeah, as Billy says it is always nice / handy to know your location!

Andy.

amonte33 · Post by **amonte33** » Sat May 13, 2017 11:08 am

OK, I will update it. I'm in the US.

So would that be 250V or another value?

Jondog · Post by **Jondog** » Sat May 13, 2017 2:14 pm

250V.

Sooner · Post by **Sooner** » Sat May 13, 2017 4:31 pm

Jondog wrote: ↑
Fri May 12, 2017 4:20 pm
Usually the fuse blows because there's an issue. I use fast blow.

The manual calls for a slow blo: https://ln-media.orangeamps.com/wp-cont ... Manual.pdf

Les Paul Lover · Post by **Les Paul Lover** » Sat May 13, 2017 9:38 pm

Sooner wrote: ↑
Sat May 13, 2017 4:31 pm

Jondog wrote: ↑
Fri May 12, 2017 4:20 pm
Usually the fuse blows because there's an issue. I use fast blow.
The manual calls for a slow blo: https://ln-media.orangeamps.com/wp-cont ... Manual.pdf

Yeah, they should be slow blow.

If you use fast blow, they are likely to keep on blowing as the current surge upon powering up might overwhelm the fuse.

If your fuse has blown, it's likely caused by an issue somewhere, usually power valve related.

Jondog · Post by **Jondog** » Sat May 13, 2017 10:29 pm

Sooner wrote: ↑
Sat May 13, 2017 4:31 pm

Jondog wrote: ↑
Fri May 12, 2017 4:20 pm
Usually the fuse blows because there's an issue. I use fast blow.
The manual calls for a slow blo: https://ln-media.orangeamps.com/wp-cont ... Manual.pdf

Yeah, it's the other way around. I use fast blow on the mains. Slow blow on the HT. T for time delay. T500mA.

AD30 Blown HT Fuse - What are the specs?

AD30 Blown HT Fuse - What are the specs?

Re: AD30 Blown HT Fuse - What are the specs?

Re: AD30 Blown HT Fuse - What are the specs?

Re: AD30 Blown HT Fuse - What are the specs?

Re: AD30 Blown HT Fuse - What are the specs?

Re: AD30 Blown HT Fuse - What are the specs?

Re: AD30 Blown HT Fuse - What are the specs?

Re: AD30 Blown HT Fuse - What are the specs?

Re: AD30 Blown HT Fuse - What are the specs?

Re: AD30 Blown HT Fuse - What are the specs?

Re: AD30 Blown HT Fuse - What are the specs?

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