I have this same issue. Usually relaunching the app on the device I am casting from a few times fixes it for whatever reason.My Chromecast is playing up, I have to factory reset it nearly every time I use it to get the cast button to show in my android apps.
Yeah but they suckOrdered a couple of Amazon Firesticks seeing as they are on special from Amazon, and half the price of a new Chromecast...
@Arctos - I did some looking Arctos and the Chromecast needs a minimum of about 850 milliamps to operate normally. It is possible that the power adapter you were using has de-rated over time or your Chromecast is wanting more power to run. This is common as a device ages. As for leaving it powered, Most people never turn their devices off so it should not cause issues.@Crush I do not know if what I did yesterday is going to be a permanent fix, but I changed the usb power supply by plugging tte usb cable into a multiple usb powered hub.
I just flicked the tv on and selected the hdmi 2 channel which is the chromecast, and the desktop came on as normal. cast the amazon video app at it from my phone and it came up first go. It's going to be Awesome.
As the power to the chromecast all night as it was not turned off as it previously was, and was warm to the touch. Hopeful that is ok with it by leaving it on.
@Lord Chance, no ...do not be a Luddite mate.
It is a old, it belonged to the Oppo phone I had I think. I will sort t he power board out this morning to re-arrange the stuff plugged into it, that I no longer use or have got rid off.It is possible that the power adapter you were using has de-rated over time or your Chromecast is wanting more power to run.