1A fuse instead of 1/2A fuse: any problem?

Ezekiel makes a good point about "fast blow" vs "slow blow". I did need to replace a fuse at one point and Radio Shack did have them.

I don't need Radio Shak fuses.The whole point is to try Isoclean fuse which supposedly is the best there is.And yes,it cost 30 bucks too.

Sorry - I lost track of your original issue. HiFi Tuning Fuses from the Cable Company might be an option. They appear to have an 0.5 amp option in 2 different size fuses. I used a Radio Shack fuse temporarily and then switched to one of these for my power amp. I thought I heard an improvement in sound.

See the link below. Click on the order form and scroll way down to see the list of amp ratings & sizes etc.
http://www.fatwyre.com/featuredprods.html