When the SenseView sometimes works and sometimes it doesn't, there can be 3 reasons for this;
1. the internet
If the Chromebox or Chromebit does not have access to the internet, the Chromebox/bit will continue to work (but without any content updates). The Chromebox does require a current internet connection once a day. It is also possible that you use 'live' elements on your SenseView that always require internet.
new wifi password
When there is no internet for a long time, "No internet" will appear on the screen. If you use Wifi, the cause may be that, for example, the password of the connection has been changed. Look here how you can set up the WiFi:
it may be that the Chromebit is in a place where there are many WiFi networks or interference is in the air. You can try to place the Chromebit in a different place with a longer HDMI cable. You can also try to configure the WiFi router on a different channel.
You may be working on a corporate network where certain ports or access are closed. The Chromebit/box may need to be registered as a device first. Consult your system administrator for more information.
2. The TV shows a black picture
In case the picture of the TV is Black and the Chromebox is just turned on, it is likely that the TV is on the wrong channel, is turned off or is in standby mode. Possible causes are;
- The TV has been turned off with a remote control
- The TV has been switched to another channel
- The TV is in energy saving mode
When you resolve these causes, the SenseView should work again.
3. the Chromebox/bit is sleeping or I have no image on the screen
It is possible that the Chromebit or Chromebox goes into sleep mode and then no longer gives a signal to the television. You will then no longer have a picture on the TV.
The Chromebox/bit does not go into sleep mode by itself, but can receive this command from a 'smart' television via the CEC protocol.
Since 2018, the Chromebox/chromebit supports the CEC protocol ( https://en.wikipedia.org/wiki/Consumer_Electronics_Control ). This protocol provides control of equipment via the HDMI cable. For example, this allows the TV to turn off the Chromebox/bit when the TV goes into standby. Conversely, it could also be that the Chromebox/bit turns on the TV as soon as it turns on itself. This is just an example because there is much more control over this CEC protocol.
Disable CEC protocol
To prevent this from leading to unexpected results, we recommend disabling this CEC Protocol. You can do this through the TV's menu. Every brand of television calls this technology differently, for example
Sony - "Bravia Sync"
Panasonic - "VIERA Link"
Philips - "EasyLink"
Samsung - "Anynet"
See also: https://en.wikipedia.org/wiki/Consumer_Electronics_Control
CEC Protocol killer
Another solution is to place a CEC killer plug on your HDMI cable. to disable the CEC protocol. You can order these here; https://www.onlinekabelshop.nl/hdmi-cec-killer?channable=e32712.MzQyNTU&awc=12234_1542891789_2fa1d3c2c4e96e3a8f3be1c6ee3ee70f