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In Reply to: RE: Replacement for Dynaco A470 Xfmr not as expected posted by airtime on September 6, 2014 at 10:15:03:
The reason I first checked with them was that I was thinking of having them rewind the original transformer with new bobbin and wire etc. Heyboer does have a good reputation for doing such work on antique radios which is part of my hobby. If all I had wanted was a Williamson type transformer it would have been OK, but not for this fine amplifier. It would require providing screen grid B+ feeds using some value of dropping resistor and bypass capacitors. I just did not want to go there. Heyboer did not have an adequate description of their transformer, if there had been such, I would have immediately known it was not what I wanted.
As it turned out I have ordered a new replacement from DynakitParts.com today and it along with a new chassis and hardware will ship on Monday. I have all the parts removed now from the old chassis. The DynakitParts transformer was only a few dollars more anyway. The company is combining the orders for a new chassis, hardware and the transformer to save some shipping costs for me.
I will keep the old defective transformer and may dig into it some time in the future to see exactly how it failed.
Joe
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- RE: Replacement for Dynaco A470 Xfmr not as expected - strijw426 13:23:40 09/06/14 (0)
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