[Amps] Blowing out finals on a Icom 7300 using a Ameritron AL 80B. Help Please!

[Ron W4BIN]

    Alton McConnell via Amps wrote:    (in part)

> I suspect that we might need to find a HW 100 or 101 (tube type finals) to use as an exciter until we get this issue tracked down.  What do professionals do about exciters for problem amps?
> How do you test a 3-500Z to see if it is a tube issue?
> Are Icom 7300's compatible with AL80Bs?
> Does anyone have any thoughts?

   Only that with triodes a plate to control grid arcs are easier than ...
Testing at reduced plate Voltage seems to be in order.

-- 
    Ron  W4BIN - Understanding is much better than
                                       knowing how.MX