The gas release arm in my oven has broken. Can a replacement part be obtained or do i need to buy a new oven?

You can replace the switch

sounds like the gas valve is leaking un plug the range and use a soapy water to find the leak

power down at the breaker or unplug the oven,then if possible you can remove the lamp cover and shell from the rear oven wall,then most lamp bases have spade terminal connections unplug these remove the whole lamp base with the broken lamp,remove the broken bulb base,then check the center power tab inside the lamp base to make sure it isn't flattened out too much,otherwise carefully bend it upwards to make sure it makes contact with the bulbs base then re-insert the terminal connections and new bulb into the opening at the rear of oven,then replace the bulb,but,do not over tighten new bulb as this leads to non operation due to heating

Generally speaking, it is possible to replace the door hinges on the majority of ovens be they gas or electric.
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My problem was not with an Amana single oven but aMoffatt double oven ! However I have now decided to buy new.

There are 3 different tones. Press and release the minus button until you find one that suits.

You will have to get a replacement from the mfr. It is not very difficult to replace, but can be time consuming. First before you buy one, make sure the hinge is broken and not just loose from the frame.

4337979 Control-Clock/Oven

Retails for $206.90 easy to replace good luck..

Relighting Your Furnace's Pilot Light
- Turn off the gas at the main valve at your utility box - Wait five to ten minutes for gas fumes to waft away - Get a long match—yes, a fireplace match, not a standard match - Set the gas valve on your furnace to "pilot" - Press the red button as you hold the match to the pilot valve - Keep pressing the red button for 30-60 seconds so the pilot can heat the thermocouple. Release the button and see if the pilot remains lit - If pilot goes out, wait five to ten minutes and repeat the process - Once the pilot stays lit, turn the main gas valve back on - If the pilot light continues to go out, call a technician, who may need to adjust or replace your thermocouple or adjust your pilot

I just fixed this. Rest the bottom of the door on a rug and push the long arm down by foot, as it is spring loaded it needs a lot of force. Once it is down slip the catch of the smaller arm on to the hook. Both sides will now be the same and you insert the door gently into the oven. Hope this helps.
Harenn