>
>? The failure of which components, Phil? // Most of the 3-500z
>failures that I have seen are due to a fil./grid short following a
>'big-bang'.
>
>I guess over the years I have seen all of the SB-200/220 etc. components
>fail. Nothing comes to mind that I have not seen crispy-crittered at one time
>or another. "Big bangs" take place because something has failed, changed
>value, degraded, or been mistreated. The "big bang" usually covers up the
>"tink" sound of the grid/fil. short.
? It seems to me that a grid/filament short can not cause a big bang. I
tried shorting the grid to fil. while the amplifier was keyed up and
nothing happened -
>A good piece of test gear for finding
>sources of big bangs is your nose...they usually stir up quite a stink
somewhere.
? True - usually R-supp.
>Too many guys just replace the shorted tubes, and never find out why they
>shorted. I suspect tube manufacturers love this approach!
>
amen
cheers, Phil
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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