Gas oven not heating

My gas oven stopped working the other day after working fine. I called a repair person and he wanted big bucks to repair $$$ (more then the oven is worth). He said it needed both a timer (i assume a control bd) and a oven sensor. Does this sound right? The control board seems to work, burners will not come on.
Is there any way I can test the existing parts to run out why it will not heat up?

Thanks in advance

Pay attention amigo, here are some quicktime movies. Wheres the popcorn?
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SPEED BAKE BABY!
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TOP UD DAT GAS STOVE

Hi,

What burners do not come on?

Bake, broil, top burners?

Top side of range works-only ovens does not work. All indicators come on - on control panel to indicate it is working correctly. However, it never heats up —this is a GAS range not an electric range

Everything in the circuit must have continuity for the oven to fire up. What if the ignitor glows but the oven will still not come on? If the ignitor is glowing that would mean you have a circuit. Solution: Replace the ignitor, even if it comes on. Why? Because 99% of the time the ignitor is weak. When it is working fine it should be so bright you cannot look at it for long. If it is a mellow orange color it is bad, replace it. The only way the gas oven valve
would be bad is if it is open and has no continuity. That goes for the control as well.
Check out this simple diagram of how a basic gas range operates.


[LEFT] oven ignitor[/LEFT]
[LEFT] [/LEFT]
[LEFT]An ignitor must draw at least 3.5 amps or that safety valve will not open up and release the gas:[/LEFT]
[LEFT] [LEFT][/LEFT]
[/LEFT]
. Click on image to see it in motion

A typical late model gas range manua
l

I replaced the control assembly and oven started working correctly-so I guess it was worth paiding the tech for the service call he was right on the money