[TenTec] TT Centurion AMP failure

[Ed]

Doyle wrote:
> Help,
>     Was operating RTTY when my Centurion Amp quit working.  The symptom is 
> that it shows 200 Ma Even in the Stnby position the plate current is 200 Ma 
> & the tubes are moderately red.  The tubes are only a year old.  Any idea 
> what might have happened?  Looks like a trip a trip to TT.
>     Anyone with a Centurion Amp have this symptom?
> Thanks,
> 
> Doyle/N4VV 

Was there any snap,crackle or pop ??

I would take a look at how TT provides cutoff bias. Usually its a zener 
in the B-/filament center tap. I would also take a look at the meter 
shunt resistor.

My last choice would be to run out and buy new tubes.

Ed W3NR