>
>Hi All,
>
>Just finished with the mods for a TL-922 and thought I would pass along a
>tip.
>
>Raychem now has 250 volt poly fuses in several usable values. These are
>self resetting thermal fuses that are common in computers these days. I
>installed one in the 110 volt DC supply to protect the filament transformer.
>Should work in the SB-220 as well.
Clipping one wire on the bias contacts will protect the filament
transformer in either amplifier. To fuse the dual primary of either
filament transformer requires two fuses.
>
>These are available in DigiKey.
>
>......
cheers, Steve
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