[ETO_Alpha] Dead Blower on Alpha 87a

[Paul Playford]

I think you will find the blower is 110vac and power comes from the center 
tap of the 220vac primary.

That way the blower will operate when the amplifier is wired for 110vac or 
220vac.

de Paul, W8AEF

ZF2JL/ZF2TA  FO8DX/FO8PLA  8Q7AA  XZ0A  VU7RG
soon to be TX5C


----- Original Message ----- 
From: "Chris Codella, W2PA" <w2pa at arrl.net>
To: <ETO_Alpha at mailman.qth.net>
Sent: Wednesday, February 13, 2008 9:38 AM
Subject: [-] Re: [ETO_Alpha] Dead Blower on Alpha 87a


> Joe,
>
> I have an 89, which may have the same blower since the basic physical 
> design is the same.  My schematic says the blower is powered by the 240V 
> tap on the transformer (i.e. the primary).
>
> 73,
> Chris, W2PA
>
> Joe wrote:
>> My question now is whether the blower is 120VAC or is it fed through a 
>> lower voltage?  I haven't taken the blower out of the case at this time, 
>> pending a determination as to whether I should look at a 12 VDC path, or, 
>> if it's 120VAC, simply remove the blower and order another one.
>> All thoughts are welcome.......
>