[ETO_Alpha] Alpha 87A Fan Noise

Thu, 18 Jul 2002 22:23:01 -0400

Just a thought:
    I do not want to accuse anyone of not reading the instructions, but...
make sure the shipping screws that anchor the fan housing to the back panel
are loose and/or removed.  The fan is supposed to float.  There may be some
rubber strips to pull out as well that cushion the housing against the back
panel, if it is like the earlier models, the 374, 76, 78.  That is covered
in the manual, but not everyone reads every line on getting set-up properly.
The note is also printed on the back panel of the 91B where the screws come
out.      :<))
    I hope that helps        73,
George,        K8GG


----- Original Message -----
From: "WL7M" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Thursday, July 18, 2002 6:48 PM
Subject: Re: [ETO_Alpha] Alpha 87A Fan Noise


> I had an unusually loud noise on my 87a - drove me nuts - I thought it was
> the fan. I followed the instructions to the letter on the setup manual
when
> putting the transformer on the chassis. I even talked to the Alpha folks
> about changing out the fan. What it turned out to be was the copper
> shielding on the "Output T/R compartment" (owner's manual Page 8) that was
> vibrating against the aluminum strip that runs from the back of the
chassis
> to the front where the top of the cabinet attaches with screws. I placed a
> very small piece of rubber in between the copper shielding and the
aluminum
> strip, and the noise diminished dramatically. You may want to check that
out
>
>
> 73,
> Joe
> WL7M
> Fritz Creek, AK
>
> -------Original Message-------
>
> From: [email protected]
> Date: Thursday, July 18, 2002 14:38:54
> To: [email protected]
> Subject: [ETO_Alpha] Alpha 87A Fan Noise
>
> Is there any way to quieten down the nois from my (relatively) new 87A?
> Joe WD5FHG
>
>
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