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Sony STR-DE675 amplifier won't turn on

Mi amplificador sony str de 675 no quiere prender la pantalla y se calientan algunos transistores en la tarjeta que lleva la conexiones que tengo que hacer para repararla

My 675 sony str amplifier does not want to turn on, the screen and some transistors are heated on the card that has the connections.
I have to make to repair it