[AMPS] Re: Poor science

[measures]

>
>> Don't know  other than the plate ampmeter showed no idling current when the
>> amp was not keyed.
>
>My inclination is now turning toward a short from anode to ground through 
>the grid.
>An ammeter in the cathode lead would remain at zero during an event like 
>this.
>A tell-tale pile of grid pieces in the bottom of the tube envelope lead me 
>down this path.  A purely uneducated guess eight years after the fact from 
2000 
>miles away!
>
This scenario would have required broken anode cooler welds - which 
allowed the anode cooler to tip sideways and touch the grid.  Terry did 
not report such an occurrence.  
If Terry still has the fil./grid shorted tubes, I can disassemble them, 
photograph what I find, and post it on my Web site.  

cheers, Phil

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