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To be clear - When you state that there is no power, I define that at absolutely nothing lights up on the dryer.
If you have a voltage meter, you will need to actually check for 240 volts at the outlet. If you do not know how to do this please let me know and I will give you details. This is dangerous if you do not know how to do this. Flipping the breaker doesn't tell you what is coming in at the outlet.
Afterwards, you would check the hookup block where the wires connect to the dryer to again see if you are getting 240 volts there.
A fair number of service calls end with one of these as being the problem. If you check these out and find you are getting 240 volts let me know and we can go further into the machine.
Please let me know if you would like more information and/or clarification.
We have seen this occur in even brand new wiring. He needs to test each leg with the ground (120 volts each).