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    VU+ Receiver General Setup Questions Vu Ultimo 4k Black hole no longer controllable

    Hi I have a VU Ultimo 4k Image black hole 3.05. H. Since yesterday a blinking circle appears in the upper left corner. The box is then no longer controllable for minutes. Then it goes again approx. 2 minutes and then the circle comes again. What can that be? thx for your help.
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