I've had this Roku express Plus 3910RW since last October. It's been working fine until recently. Lately, apparently after the previous software update , the wifi signal now is weak. When I run the Network- Check connection test, it shows no wifi signal or connection (red X) . Even with no apparent connection, It still connects but barely, but at any time, it drops randomly, buffering / freezing the video due to a lost signal.
I swapped my older Roku Express 3710X in place of the newer Express + 3910RW for testing. In the same location with the same power supply and cables, my older Roku express still works fine, excellent signal strength.
I reinstalled the new Express +.
With the new Express + 3910RW back in place,
I tried swapping power supplies and switching tv's , no change. Wifi signal is good on the other unit and other wifi devices. No signal interference on 2.4ghz channel 4 . I updated the router firmware, reset the router, same issue. I even shut off all other wireless devices, no change.
Older Roku still works great.
I checked the secret wifi menu,
signal strength ; 0
Antenna 1 : 0 to 1 , no higher.
Antenna 2: 0, no change from 0.
Glitch/sec between 10 and 200
Tried all the resets. No change
This seems to have begun after the last software update, but not sure if it's related. the unit does get pretty warm .
Is that normal from the 4 core processor ? Or is the unit's wifi failing from overheating or something?
Roku Express + Model 3910RW
Serial on request
Sw build 8.1.0 4145-51
device id : on request