Re: Intermittent no signal on Vizio 4k while using a roku stick +
Is your Roku device powered by plugging it into a USB port on your television? The ports on many televisions only supply 0.5 amp, which is not enough to power a Roku reliably.
It is recommended that you power your Roku device via the power adapter that came with it, plugged into your house power. If you no longer have the USB power adapter that came with your device, you may have another one handy from another device that can be used -- just make sure the tiny print on it confirms it has a 5 volt dc output of at least 1 amp.
Roku Community Streaming Expert I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well. If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X
Rokus *still* not fully compatible with Vizio D-Series TVs / loses HDMI signal every couple hours
It's been a few years and level one support would never pass me on to the next level, despite it being a well documented issue.
My Roku Ultra 4K and my Vizio D-Series (D43-F1) do not play nice together. Every couple of hours the HDMI signal is lost for a second or so, screen goes blank, sound is gone. When the screen comes back, I notice the time on the screen is about 58-62 minutes behind current time, then the clock corrects itself.
Level 1 support will of course blame the TV 100% of the time. Make sure you do factory resets on the TV. Factory reset on the Roku. Use different cables. Use a different HDMI port. Try different settings on the player's output, 2K instead of 4K, etc. Make sure firmware is up to date on both devices. Use a different cable. Use a different input. Your TV is defective. Did this sound repetitive?
Even on the Roku forums here there are comments about this never being a problem pre-Roku OS (version 8?) Sometimes when the firmware of the Roku is updated, the behavior of the issue is ever so slightly changes. The December update created a whole new problem. When this issue used to happen I used to hit the loop back a few seconds button so I don't lose what's going on on the TV program. Now if I do this, the player crashes hard, sometimes even requiring it be unplugged to be rebooted. So the best I can do is press pause, wait for the screen to come back , then unpause it and loop back.
This is just a bedroom TV so I wasn't looking for the best model, I don't need to spend the bucks on a high end Sony. The TVs built in chromecast doesn't do it, a connected blu-ray player doesn't do it.