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Humptydumpty · 11th Feb 2019, 8:37 pm

David i notice a noise now on the pot , and it is a new pot that i fitted .
Today i went through the eexact same job that i did a few weeks ago .You remember David i fitted the three large axial caps to set 1 This made no change in reducing the hum.The C40 was rewired back to how it was with new wires .So i went through it again today with set no1 , again with three new caps that we chose last week . And i thought at the time that it would make no difference .And it did not, then i reversed the whole procedure and change it back [ again ] to how it was . With 3 new red wires again . I am stuck with this hum more from set 1 than set 2... Set one this looks mint .But is not as good as the second set i purchased for spares. So before i strip out set 1 for the face plate, reason is ,, its in good condition fit it to set 1 and build one good receiver. I have read some place about a valve that could cause this type of hum .Any ideas what valve it could be ?.

11th Feb 2019, 8:37 pm	#34
Humptydumpty Pentode Join Date: Aug 2010 Location: Bewdley, Worcestershire, UK. Posts: 191	Re: Capacitors for Trio 9R 59D David i notice a noise now on the pot , and it is a new pot that i fitted . Today i went through the eexact same job that i did a few weeks ago .You remember David i fitted the three large axial caps to set 1 This made no change in reducing the hum.The C40 was rewired back to how it was with new wires .So i went through it again today with set no1 , again with three new caps that we chose last week . And i thought at the time that it would make no difference .And it did not, then i reversed the whole procedure and change it back [ again ] to how it was . With 3 new red wires again . I am stuck with this hum more from set 1 than set 2... Set one this looks mint .But is not as good as the second set i purchased for spares. So before i strip out set 1 for the face plate, reason is ,, its in good condition fit it to set 1 and build one good receiver. I have read some place about a valve that could cause this type of hum .Any ideas what valve it could be ?.