While waiting for the tantalum capacitors for my Leader, I decided to give my EICO 315 a look over. I've fired it up a couple times before and there's something wrong with it. As I rotate the dial, the output will die at some point. I just checked all the tube and they're fine. I think I'll swap out those paper caps next.

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As I rotate the dial, the output will die at some point.



Check the integrity of the variable cap - the brass spring and ball bearings in my 324 caused the output to come and go - if I pressed slightly inward on the knob, things were okay. A good cleaning of the variable cap fixed it. Definitely change the ol' caps though - waxy caps gotta go!

Cheers,

Check the integrity of the variable cap - the brass spring and ball bearings in my 324 caused the output to come and go - if I pressed slightly inward on the knob, things were okay. A good cleaning of the variable cap fixed it. Definitely change the ol' caps though - waxy caps gotta go!

Cheers,

I finished the recap and cleaned the variable cap contacts. It's working fine on the lower bands A, B, C, and D, but I'm still having problems on bands E, F, G. The oscillations die on the left 1/3 of the tuning dial :(

The tubes check good and I've swapped them with known good tubes for the heck of it - no change.

All the resistors measure 10-20 % high, but I figure that's OK. I'll check the coils and trimmer caps next I guess.