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

[Tom W8JI]

73, Tom W8JI
----- Original Message ----- 
From: "Peter Chadwick" <g3rzp at g3rzp.wanadoo.co.uk>
To: <amps at contesting.com>
Sent: Sunday, April 15, 2007 1:05 PM
Subject: [Amps] FW: Re: (Fwd) Amp tube pin/socket  de VY1JA


>
>
> Tom said:
>>Probably not since it is not a problem that surfaces much,
> if at all, in this amp.<
> 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.

...or even just operating it far out of spec compared to 
other people, or a bad gift tube, etc.