You clever lot may already be aware of this but it’s new to me 😁
I bought a none working power amp ( owner had somehow touched the speaker wires together) so the first thing I did was check the 4 internal 3.15amp fuses for continuity and they had all blown , as I didn’t have any of those fuses I risked wrapping some thin wire around the old fuses just to test ( I don’t recommend doing this) and hey presto it worked and the amp sounded very nice . I then ordered some replacement fuses from Amazon prime ( being impatient) , they promptly arrived the following day , fitted my newly acquired fuses and “ Hmmmm ! Now what’s wrong? “ I thought, sounds all distorted, perhaps there’s something else wrong like caps or the transistors. I went about changing some of the small value caps and removed some of the larger caps so that I could test them and they were still within their tolerance, plugged the amp back in and it still sounded distorted so I then went back to the wire wrapped fuses that I made and again gorgeous sounds 🤷♂️
I then bought some Bussmann fuses locally and yes the amp sounds fine . Next time I see 1 fuse for sale at £600 I may not be so quick to judge. 😁
I bought a none working power amp ( owner had somehow touched the speaker wires together) so the first thing I did was check the 4 internal 3.15amp fuses for continuity and they had all blown , as I didn’t have any of those fuses I risked wrapping some thin wire around the old fuses just to test ( I don’t recommend doing this) and hey presto it worked and the amp sounded very nice . I then ordered some replacement fuses from Amazon prime ( being impatient) , they promptly arrived the following day , fitted my newly acquired fuses and “ Hmmmm ! Now what’s wrong? “ I thought, sounds all distorted, perhaps there’s something else wrong like caps or the transistors. I went about changing some of the small value caps and removed some of the larger caps so that I could test them and they were still within their tolerance, plugged the amp back in and it still sounded distorted so I then went back to the wire wrapped fuses that I made and again gorgeous sounds 🤷♂️
I then bought some Bussmann fuses locally and yes the amp sounds fine . Next time I see 1 fuse for sale at £600 I may not be so quick to judge. 😁
I assume the fuses were in the speaker lines? Can you take some resistance measurements of the dud fuses and possibly a photo so we can see the internal construction?
TheFinisher; wrapping wire around a fuse ... same as putting a penny in a fuse. It offers little or no protection.
Always buy fuses from a reputable seller!
https://cpc.farnell.com/c/electroni...e-accessories?st=glass+fuses&showResults=true
https://uk.rs-online.com/web/c/fuses-circuit-breakers/fuses/cartridge-fuses/
This is just two UK suppliers.
Always buy fuses from a reputable seller!
https://cpc.farnell.com/c/electroni...e-accessories?st=glass+fuses&showResults=true
https://uk.rs-online.com/web/c/fuses-circuit-breakers/fuses/cartridge-fuses/
This is just two UK suppliers.