Here are your parts
Replacement parts for AMANA LEA90AW Dryer - Ele | AppliancePartsPros.com

Here is a manual
http://www.servicematters.com/maytag_library/docs/RS3200005R2.pdf

We did a continuity test on the thermal fuse
This should not effect starting

[COLOR="Blue"]There is no blown fuse or tripped circuit breaker.[/COLOR]
I would still check the power in.
This is probably a long shaot as normally the Neutral to L1 power side is also used to power the board which is working.
First try flipping the breaker off/on slowly a couple times. Sometimes you can loose half the line without actually tripping the breaker and the heating coil requires the full 240 volts.
If this does nothing.
Measure the voltage at the plug
L1 to L2 should be 240 volts
L1 to Neutral and L2 to Neutral, both should be 120 volts.
If OK
Unplug the unit and check the wires at the unit's terminal strip to ensure they are properly connected and none of them have burned off
If OK
Plug the unit in and check the voltage at the terminal strip. This is just in case you have a bad line cord. Be careful 240 volts is lethal.

Unfortunately it sounds like the board is toast.
Your starting circuit is
Neutral , motor's Thermal Protect, Start and Run motor windings, motor's centrifugal Switch, H1-1 on the board, Relay K1, H1-2 on the board, Door Switch 3/1, H1-3 on the board, FS1 on the board, L1

Check for burned tracks on the board and bad connections.
Check the soldering at the K1 relay.

If you measure from H1-1 to H1-2 you should see 120 volts with the door closed.
When you push start it should drop to 0 volts.
If not either the relay is not being activated or it's contacts are toast.