No Power to Circuit Board

Rudd Silhouette II has no power to Circuit Board. Replaced board thinking it blew out but no power. Checked circuitbreaker and is in the on position.

Is there a fuse for this unit that someone can direct me too? When the unit originally failed the circuit break was tripped and I subsequently reset.

No control voltage 24 volts. The fan board if it has one. sometimes has a five amp auto fuse on it. If not sounds like the transformer. Not hard to replace.