73, Tom W8JI
----- Original Message -----
From: "Peter Chadwick" <g3rzp@g3rzp.wanadoo.co.uk>
To: <amps@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.
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