H1 HT fuse for Thunderverb 200??

[gauze]

Hi,
I was looking at my friend's non-functioning thunderverb 200 (super low volume) and discovered the H1 HT fuse was blown, I took a picture of it (see photo) and then I misplaced the fuse and finding the information if it's a fast or slow blow is seemingly impossible, it's not in the manual, it's not mentioned on any forum posts I could see.

Help?

this I know It's a 5x20mm 1amp 250v fuse I just don't know if it's fast or slow blow (or why it's blowing I guess)

[bclaire]

Fuses blow usually when something is wrong, like output tubes for example.

The TH200 HT fuse simply says T1A H.

Like this one:
https://www.amazon.co.uk/T1AH-20mm-Cera ... B003BJM7NK

[gauze]

I ended up finding the fuse and it's "L" type (time lag) which is another term for slow blow, in case anyone else is looking for this info in the future.