>
>In my SB-220, at least, the springs that clamp the socket contacts on the
>pins are very readily removable. The design really looks as if the springs
>were designed to be changed out if and when they became overheated
>
>Assuming the spring clips on the filament pins have been annealed to the
>point that they will no longer hold tension, that raises a few possibilities:
>
>Could I swap one or both (rebent first) for the springs on a grid pin,
>which presumably have not been through such temperature extremes?
>
>Could I seek to retemper the spring clips by heating and quenching?
>
>Does anyone have a junked SB-220 or other amp with the same sockets from
>which you'd be willing to scavenge some non-filament springs?
>
>Does anyone know of a source for the clips without buying the whole socket?
>
// Such springs can be bent up from heated austenitic steel piano wire -
which is available in hobby shops. No tempering is needed. Temper
austenitic steel and it breaks like glass. Trimmed, large size bobby
pins also work.
cheers, Pete
- R. L. Measures, 805.386.3734, AG6K, www.vcnet.com/measures.
end
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