ger56
New Member
Hello ,
I have a loud hum on my right channel tube amp Sansui Au111. volum at 0 and any device ( phono - aux- tuner ... )
- It comes form the preamp section as I test the amp section with an other pre and it works fine .
- I have tried to change one by one the (5) 12Ax7 with a brand new ecc83 but the problem remain ( unless there would be 2 tube or more defect ) .
Any idea would be welcome , I have the manual but I am not a technician .
Regards
Ger56
I have a loud hum on my right channel tube amp Sansui Au111. volum at 0 and any device ( phono - aux- tuner ... )
- It comes form the preamp section as I test the amp section with an other pre and it works fine .
- I have tried to change one by one the (5) 12Ax7 with a brand new ecc83 but the problem remain ( unless there would be 2 tube or more defect ) .
Any idea would be welcome , I have the manual but I am not a technician .
Regards
Ger56