I expect this video may help.
If the inside pointing device will rotate a plastic part is likely broken. If it is stuck and the pointer doesn’t move then it probably needs lubrication.
While this vid doesn’t deal directly with the rotating pointer you can get a good look at it and see how it works. If it’s broken it’s probably going to need lube and you can search amazon for parts. The vid also covers lubing the antenna.
Good luck and let the crowd know what you find.
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Cheers,
T_
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