WARNING! Before accessing fuses make sure the amplifier is unplugged from the mains socket!

If the amplifier constantly blows the HT fuse*, power tube failure may be the cause. Replace the power tubes with a matched set and have a repair technician check the bias.

*The HT fuse is located in the twisting style fuse holder.

If the amplifier is blowing the mains fuse* then it may be the rectifier tube that is at fault. Replace it with a quality brand tube.

* The Mains fuse is located in a tray built in to the mains socket. Use a screwdriver to prize the tray open.