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Heathkit AA151 Volume Control Issue

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EmperorNorton:
Hello guys,

Thought that tubes would be more fun and end up with more problems as I go.   I noticed some variation in right and left channel on my Heathkit.  Seemed like the Heresys should be cranking at 12 oclock.   All the connections are good.   Sprayed a little DeOxit in the volume pot but made no difference.  Any suggestions before I take it out to Don at Phils TV?  thanks in advance

rgpit:
Swap the right and left channel tubes and see if the volume issue follows the tubes. BTW you should not use contact preservative on any tube pins or sockets.

OldiesButGoodies:

--- Quote from: EmperorNorton on May 30, 2018, 10:19:11 AM ---Hello guys,

Thought that tubes would be more fun and end up with more problems as I go.   I noticed some variation in right and left channel on my Heathkit.  Seemed like the Heresys should be cranking at 12 oclock.   All the connections are good.   Sprayed a little DeOxit in the volume pot but made no difference.  Any suggestions before I take it out to Don at Phils TV?  thanks in advance

--- End quote ---

They can be more fun but can also be a pain,  as you can be witness to now.  For now I am using solid state,  where I know I will get roughly the same result every time.  Do I miss tubes?  Yes,  particularly in the preamp section.  So would not be surprised  if I end up with tubes again there.   

Try Ron's suggestion - see if you have a weak tube somewhere. 

Pepe

MacGeek:
What is your source?  Channel imbalance issues can come from anywhere in the signal chain.  If the tube swap doesn't identify the problem, I suggest swapping every wire pair, a component at a time, including the speakers

EmperorNorton:
I will swap out components and swap the tubes.  The volume seems balanced but low.  I can listen to the Heresys with the volume knob at 3 o'clock and it's not too loud.

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