The supercap in mine has been replaced with 0.47F, and the memories seem to hold for about a week when DC has been disconnected.
It is a bit disconcerting to power it up and be presented with either a completely blank display or one with elements missing, but a reset always brings things back to normal.
Quite a good scanner. The audio mod at the end of the service manual is worth doing.
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The catch can be quite tight so you may need to use something like a steel ruler to pop it out
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At the top of the small panel, a
thin steel ruler, or preferably a finger nail
