"No signal", if there's no error code/number with it, is usually an error generated by your TV. This often means there is no video input being detected on the selected HDMI input.
Are you sure you have the correct HDMI input selected, that your V6's HDMI lead is connected to? Have you tried alternate HDMI ports on your TV?
When you restarted the V6, did you get the "Welcome" screen followed by "starting up"? A video self-test is part of the boot sequence.
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