[Amps] TL-922A Low power out in 160m

[J. Hector Garcia XE2K]

Hi  Guys:

I found that my TL922 is putting less that 400 watts in 160m , 100 w input.  i will like to fix, any idea where i can start to check ?

all the other bands gives more than 1kw with 100w input.

i note that the tubes get RED (bright orange) in 160 for that reason i don't use it much during the past CQP in that band, all the othes nothing to worry.