02-20-2015, 04:23 PM
I have the set playing after a recap and changed resistors as I went that I could reach. I didn't change the .05 cap in the rear of the rf deck yet-that's next.
It plays loud and strong but the tubes were initially in so tight that I had to use a small hammer and piece of wood to tap them out of the sockets from underneath the chassis. I cleaned the tube pins and the sockets as best I could (sprayed with tuner cleaner and lube) but they are still fairly tight and may still be corroded.
The 6A8 Mixer tube is very touchy when I get near it or when I touch it. The volume goes up quite a bit just hovering over it. I think the contacts are corroded in that socket as it goes from quiet to loud just by wiggling it around.
What I'd like to know is what do you guys use to clean the inside of the tube sockets? I am going to try to get some welding tip cleaners as they might help remove any corrosion. I'd like small wire brushes but I have never seen them that small. Any ideas would be appreciated.
Steve
PS All voltages are a bit low but overall look good except for one tube. The 6K7 2nd Detector should read about 40,20 and 20 volts on pins 3,4 and 5. I only get 0v, unstable and -2.5 on pins 3,4 and 5 respectively. I don't have a tester, is this a sign of a bad tube? I am going to recheck the components associated with that tube this weekend.
It plays loud and strong but the tubes were initially in so tight that I had to use a small hammer and piece of wood to tap them out of the sockets from underneath the chassis. I cleaned the tube pins and the sockets as best I could (sprayed with tuner cleaner and lube) but they are still fairly tight and may still be corroded.
The 6A8 Mixer tube is very touchy when I get near it or when I touch it. The volume goes up quite a bit just hovering over it. I think the contacts are corroded in that socket as it goes from quiet to loud just by wiggling it around.
What I'd like to know is what do you guys use to clean the inside of the tube sockets? I am going to try to get some welding tip cleaners as they might help remove any corrosion. I'd like small wire brushes but I have never seen them that small. Any ideas would be appreciated.
Steve
PS All voltages are a bit low but overall look good except for one tube. The 6K7 2nd Detector should read about 40,20 and 20 volts on pins 3,4 and 5. I only get 0v, unstable and -2.5 on pins 3,4 and 5 respectively. I don't have a tester, is this a sign of a bad tube? I am going to recheck the components associated with that tube this weekend.
