>In the absence of obvious failures like tubes don't glow, tubes glow too
>brightly and make loud noises, foul odors or trips breakers, what
indications would lead you to retube a 3-500Z amplifier?
>In my case, it is an 18-year old Henry 3K-A with the original finals.
>tnx es 73,
>Hank
AA4HP
Low Pout
Excessive drive to get same Pout
Not tuning up correctly
Grid current wrong for Pout and level of drive
Just to name a few.
--Toll Free
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