As the title states, I think I have a problem. I purchased a wood case for my Fisher the KX200. But I was using a quad of EH's for the output tubes and the case wouldn't clear the one tube on the left. So I found a quad of Fisher branded Westinghouses on the auction site, the seller stated all tested good and included a picture of one tube on his tester with the needle all the way into the far good zone, and stated all tested about the same.
I installed the tubes, and tried to bias them everything was good, but channel A would not balance correctly, by the meter. Then I saw one of the tubes getting really red, so I shut it down. I tried again after letting things cool, all the tubes glow equal, and the amp has equal sound out of both channels but the right channel has some noise like static when your turning a pot, but it comes and goes without turning anything, it gets louder when you turn up the volume and goes away when turned down. Is that one tube bad and thats why it wouldn't pass the balance test, as the EH's had no problems, and is that where the noise is coming from? Any idea's?
I installed the tubes, and tried to bias them everything was good, but channel A would not balance correctly, by the meter. Then I saw one of the tubes getting really red, so I shut it down. I tried again after letting things cool, all the tubes glow equal, and the amp has equal sound out of both channels but the right channel has some noise like static when your turning a pot, but it comes and goes without turning anything, it gets louder when you turn up the volume and goes away when turned down. Is that one tube bad and thats why it wouldn't pass the balance test, as the EH's had no problems, and is that where the noise is coming from? Any idea's?