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Maybe we could turn off USB and enable/disable it inside a menu.
We thought about 3 level power management for many years. There are ways it could be implemented, but it would be complex and the benefits may be small so I'm not sure how worthwhile it would be.
Just to confirm: the procedure/experiments you describe are WITHOUT SDcard, i.e. we are testing the standalone player?
If you try several increments at a time, it can get stuck.
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