Installing tilt-window spiral balance without removing sash?

A quick learner from Florida says:
A window sash is stuck in the closed position. Looks like I need to replace the spiral balance on the right side but I can't get to it because I can't get the window open to remove the sash. Is there another way to remove the spiral balance without removing the window sash?

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Paul from SWISCO responded:
Thanks for posting! I'm not sure if you can uninstall the balance without removing the sash. However, I may be able to help you remove the sash. First, you would unscrew both of the top balance screws. Be careful, as the balance might spring back when it is charged. Then, force the window sash up and tilt it in, so that you can see what the problem might be.
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