After finishing things up with the Zenith porthole, I decided to try playing with this Bendix. There's not a whole lot under the chassis, so it was very inviting. Less is more!
Checking tubes first, I found the 5V4 to be shorted. Glad I found that before turning this thing on!
Initial soft starting revealed one of the cans getting hot by the time I got it to 70 volts. Changing caps should have been a breeze... lots of room under there... but the majority of the paper caps were all shoved in a corner and all connected to the same terminal strip. Due to the way they were bunched up, I couldn't change one at a time... had to put out all of them in that corner before installing new ones.
After plugging in the HV, I got a picture with good brightness on the 10BP4, but was having a vertical issue. Part of the bottom was superimposed in the top half. Tried swapping some 6SN7's ... which helped a little, but not enough. Went back and found a resistor in the osc that was reading too high and changing as it warmed up... and also a mica cap that was off spec as well. Now, I've got a good stable picture.
But....
The picture is not centered correctly and there's no provisions for centering. The pic sits too low and to the left. Suggestions?