[Amps] (Fwd) Amp tube pin/socket de VY1JA

[Tom W8JI]

> Which suggests a defective socket, and the usual 'fix' of 
> changing the spring clip for one from a grid pin makes 
> sense.
> But it might also be worth checking that the fan is going 
> at full speed, and hasn't got dust or gooed up lubricant 
> in the bearings, or the bearings are worn and the fan is 
> running slow, reducing the airflow. If that's the case, 
> then a new clip will go the same way.


I wouldn't recommend doing anything until he describes how 
he is operating the amplifier. It could just be a bad spring 
but without knowing how much anode dissipation and the duty 
cycle he could be right back in the same position.

73 Tom