Eurotherm DC drive repair

I am looking for a repair of a Eurotherm 590P DC drive unit. Model No. 590P-DRV/0035/500/0011/UK/AN/0/110/0/0/0 The fault displays as a 3 phase failure. The internal 415V fuses are blowing and it is also taking out the main 40A 3 phase cct breaker. On inspection the main heat sink cooling fan was seized. Although now cleaned and free I dont think it is working but something has blown on the main pcb power board next to the thyristors. Are you able to repair and if so is it possible to give me a rough estimate for repair please.
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