Exact model-family answer directory
Roku Streaming Stick 4K troubleshooting
Roku Streaming Stick 4K (3820X/3821X): streaming Stick 4K 3820 (from the Wikipedia page); chip and memory; wi-Fi and remote, and a fix for each symptom below.
- Streaming Stick 4K 3820 (from the Wikipedia page)Released September 2021 with 4K and all HDR formats, an HDMI 2.0b connector and a Micro USB 2.0 power port.
Confirm the model first
Which units this covers, and how to tell yours is one of them
- Model numbers and patterns
- 3820X/3821X
Published specification
What is true of this model and changes how you fix it
- Device type — streaming player, not a TVA stick that plugs into an HDMI port; no panel of its own, so picture adjustments are made on the TV. Runs Roku OS.
- HDR — Dolby Vision, unlike the Express 4KThe Streaming Stick 4K adds Dolby Vision on top of HDR10 and HDR10+ — the cheaper Express 4K does NOT have Dolby Vision. If you moved from a Stick 4K to an Express 4K and lost Dolby Vision, that is the model difference, not a fault.
- Connectivity — long-range Wi-Fi, no EthernetHas an improved long-range dual-band Wi-Fi receiver but NO Ethernet port (only the Ultra has that). It is powered from the TV's USB port or the supplied adapter — a stick that reboots or drops out is often being underpowered by a weak TV USB port, so use the wall adapter.
- Chip and memoryA Realtek 1315NR with 1 GB RAM and 4 GB storage.
- Wi-Fi and remoteDual-band MIMO 802.11 a/b/g/n/ac and a voice remote.
Where these figures were read. support.roku.com/article/getting-to-know-your-roku-streaming-stick-4k-or-streaming-stick-4kplus (real model 3820 confirmed) + roku.com
Manufacturer support for this product line. Roku Support — Roku support. Official Roku player, Roku TV, remote, network and account support.
Also read for this model. Wikipedia — Roku.
Exact questions
Questions that only have an answer for the Roku Streaming Stick 4K
My Roku Streaming Stick 4K keeps restarting or won't power on.+
The most common cause is power. The stick draws more than some TV USB ports supply, so if it is powered from the TV's USB it can brown-out and reboot — plug it into the included wall adapter instead. Also make sure it is on an HDMI port with the extender cable if the signal is weak. It has no Ethernet, so persistent drop-outs after that are Wi-Fi range.