[Amps] SB220 transformer

[DAVE WHITE]

Hi David - by the time I've got it shipped, paid customs duty, paid courier's fees to carry out import etc it'll have cost me close on GBP450.  Our thieving government will charge about 6 percent "duty" plus 15 percent "VAT" on the cost of the whole shipment including the shipping charge.

It'll be cheaper to get something made locally or even to get the original rewound.   I'll shop around for a few prices next week, but would expect to pay GBP200 or so, for a good custom wound transformer to the right spec....if I can get hold of the spec!

cheers

Dave G0OIL

--- On Fri, 20/2/09, David Goncalves <davegoncalves at gmail.com> wrote:
From: David Goncalves <davegoncalves at gmail.com>
Subject: Re: [Amps] SB220 transformer
To: "DAVE WHITE" <mausoptik at btinternet.com>
Date: Friday, 20 February, 2009, 9:05 PM

How about a transformer from Harbach Electronics? Shipping issue?
 
David Goncalves
W1EUJ


On Fri, Feb 20, 2009 at 3:27 PM, DAVE WHITE <mausoptik at btinternet.com> wrote:

Hi all

Well when I spoke of the amp that G0DBE has had on loan from me for a while, extolling its virtues and saying how reliable it was....


....I GAVE IT THE KISS OF DEATH!

Just how can praising a piece of equipment that's been reliable for 30 years cause it suddenly to fail?  Is it the same jinx that causes good amps to suddenly burst into flames at 0001z on a Friday night at the first utterence of the Phrase "CQ CONTEST"?  I think we should be told.


Anyway, it appears that the HT transformer is knackered, taking the plate blocking capacitor with it - and who knows what else.  I'll rebuild it at some point soon.  In the meantime I need to get a transformer....


Does anyone happen to have the spec and dimensions of the Heath SB220 transformer to hand?  I'll get one ordered from TEC in Basildon who I'm sure will build me a transformer that'll last another 30 years.


Anyone got any idea what typically precipitates these failures?  I don't know the exact sequence of events since the amp's been out on loan for about 10 years or more.

cheers

Dave G0OIL
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-- 
David Goncalves