Replacing bad transformers

I have a 1950's Blaupunkt tube radio that I believe has a bad transformer. I get no power out of it. It is a three phase with a 110V input, and secondaries of 260v, 6.3v and 2x6.3v. I can find new ones online but they are very expensive. I am wondering if I can use a torodial SCR transformer that has the same specs. I am not sure if the "SCR" lead  is a necessary hookup for this transformer.

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Hi Evan.
there is no radio with a 3-Phase power-connection!
Please start the post from correct model-site or find the correct model in RM and link it. The schema will show, what transformer is used.

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