Screen does not find Nintendo switch?

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So yesterday I connected my Nintendo Switch and everything worked great. Then today I connected my switch to the TV but then switched back to the screen but the screen now says only "HDMI no signal"? I have all the plugs on and unplugged, everything restarted several times, set the TV settings on the switch on the switch and still nothing… The screen is synonymous ok and when I connect my laptop, everything runs smoothly. And as I said yesterday, everything worked…

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Have solved the problem! Have exchanged the no name HDMI cable against that of Nintendo and now everything is running again…