Amplifier Fuses Blown

E

eyedee

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Surrey
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United Kingdom
I've got a Cambridge Audio A5 Amplifier which has suddenly decided to stop working. When the power is turned on nothing happens except from a quiet buzzing from inside the unit. I looked inside to find two fuses have blown. They are 20mm x 5mm glass fuses and have T4AL 250V stamped onto them. The other end of the fuse has all sorts of marks (British Standard marks etc.) and 50T stamped onto it.

I can't seem to find anyone in the UK who sells these fuses though? I'm starting to think that the same fuse sold in the UK is called a different name or marked up differently, but I haven't much of a clue about electrics, so even if I'm right I couldn't figure out which fuse was the right one.

Does anyone know where I can get a replacement fuse from or if there is a compatible fuse I should be looking for?

Thanks.
 
Try phoning up Cambridge Audio, they might even pop a few in the post for free, goodwill and all that, it does still exist in places.
 
Thanks guys. Cambridge Audio said to seek help from Richer Sounds - their UK distributor - so I called two stores and then the main service department who told me they would have to charge me £15 plus the cost of the fuses. But the engineer was helpful and said to buy any T rated 4amp 20mm fuse, which Maplin would sell... but they don't. They only sell 5amp T rated fuses. I think T stands for 'timed', or 'slow-blow' fuse.

I've found an online fuse store who sell packs of 10 T 4amp fuses for £5 including delivery so I guess I'll go down that route.
 
cheers plugwash. I ordered some today - 10 for £3.71 including delivery. At least I'll have spares if they start to blow again! :wink:
 
It looks like they have transformer issues.....

http://www.diyaudio.com/forums/showthread.php?t=147058&highlight=Cambridge+Audio

Be wary of just replacing the fuses, something has caused them to fail in the first place. If you are unsure about poking about with potentially fatal voltages I would say take it for repair rather than try deal with it yourself.

If all else fails, gut it and use the chassis to build a LM3875 or LM1875 chipamp. You wont be disappointed.

Good luck.

John
 
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