I have had two Roku TV's for over a year. Both are ONN model nos. 100012590 running software version 11.5.0 build 4312-DN. One carries serial no. X007003KRR8H and the other carries serial no. YK0011571167. Both have been operating flawlessly on the same wireless network. Last week, the one with serial no. YK0011571167 ceased connecting and I cannot successfully get it to reconnect. I have restarted it, reset it to factory default, tried different networks, reset the router, restricted the wireless network to 2.4GB, and let the TV sit shut off for days. Whenever I try to connect it to a wireless network, it spins for a minute and then returns a 14.50 error. I was able to get it to connect to a personal hotspot on my phone a couple of times, but that is now no longer successful.
I purchased a Roku 4K stick and plugged it into one of the HDMI ports, seeking to bypass the factory installed Roku. The stick likewise cannot connect to a wireless network while plugged into the Roku TV. The stick will successfully connect elsewhere. Is my YK0011571167 Roku TV toast?
Do you have 5GHz Wi-Fi available? With 2.4GHz Wi-Fi, make sure the wireless mode is set to b/g/n and not g/n. The stick not connecting when plugged into the TV is worrisome. It almost sounds like there's some kind of interference in that location.
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Thanks for your reply. I have a T-link Deco mesh network; other wireless devices on the network in that room connect without problem and the Roku TV had worked in that room without fail until last week. 5GHz is disabled so the network uses only 2.4 GHz. I have moved the Roku TV to other areas in the house with the same result - no connection. The stick connects when plugged into other TV's, though I have not yet tried plugging it into the working Roku TV.