Screen and sound stop for a few seconds
We just replaced our U-verse with a Roku Premium. After several hours, black screen and no sound for a few seconds, just like you turned the TV off. When screen comes back, HDMI window shows up for a...
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Re-set Roku device, tried 2 different HDMI cables, 3 including the one supplied with device, and switched ports on the TV. Same results.
My next suspects would be either overheating (my 3920 gets really hot) or an insufficient power supply. If you're using the TV's USB port to power it, try a USB power adapter/charger that can supply at least 1 Amp plugged into the wall. For overheating, well... I took my 3920 out of its case. For what it's worth, my 3920 has been the most unreliable Roku device I've ever owned and I've owned most of them, but it is still chugging along naked as it is. 🙂
I am using the AC power adapter that came with it. The device does feel warm, but not extremely hot. I even set the device on top of 2 old clacker balls, if you know what those are,
for air flow.
An additional quirk, on ESPN channels, the sound will drop to barely audible, then comes back on louder and fuzzy sounding. Change the channel and it's back to normal. Evidently these issues are something I'll have to live with. Since Roku has nothing to add or any solution, makes me hesitant to invest in another product.
