[time-nuts] 5071A with ATTENTION flashing

[Li Ang]

HI
  I just came back from another 5071a seller. 
#1-#3 fatal error: max emult. 
#4 fatal error: overcureent (about 80uA) 
I put the tube from #1 to #4. #4 became a "max emult" one. 

I think the tube #1 is really dead and the circuit of #4 is functional.

Since the ion pump current was dropping slowly.(80uA to 76uA in 1 hour), is it possible to be back to normal?

regards
LiAng 
BI7LNQ