Wonder if anyone has experienced this failure mode with this or a similar amp: This amp is 80s vintage and since then has been a solid performer, grounded grid with two 3-500z. But it has a developed
Sounds like a faulty bias zener. Don N8DE Wonder if anyone has experienced this failure mode with this or a similar amp: This amp is 80s vintage and since then has been a solid performer, grounded gr
Right you were Colin. After pulling and swapping the result was one of them had the symptom and the other didn't. Pretty clear cut. So I guess I'm on the hunt for another, first price i've seen was 1
Turned out after pulling and swapping the tubes it pretty showed one had the problem and the other didn't. Was looking in a different direction. I am wondering if there was something else wrong that
Agreed, that is the one thing i did do, is replace the zener, but no change. Looks like it is a bad tube, after swapping and pulling, the problem follows the one of them. So now for a little market r
See http://www.rfconcepts.com/PRODUCTS/tubes They appear to be the best deal around. 73, Alek VK6APK On 3/10/2014 10:05 AM, k0zx Rich wrote: Right you were Colin. After pulling and swapping the resul
Agreed! 73 Jim W7RY See http://www.rfconcepts.com/PRODUCTS/tubes They appear to be the best deal around. 73, Alek VK6APK On 3/10/2014 10:05 AM, k0zx Rich wrote: Right you were Colin. After pulling an
I've run into a number of Eimac 3-500Zs that developed filament to grid shorts. Often they test OK when cold. On 10/3/2014 05:16, k0zx Rich wrote: Turned out after pulling and swapping the tubes it p
Agreed, that is the one thing i did do, is replace the zener, but no change. Looks like it is a bad tube, after swapping and pulling, the problem follows the one of them. So now for a little market r
Agreed, that is the one thing i did do, is replace the zener, but no change. Looks like it is a bad tube, after swapping and pulling, the problem follows the one of them. So now for a little market r