How to Fix a Smart TV That Keeps Disconnecting From Wi-Fi

To fix a smart TV that keeps disconnecting from Wi-Fi, you must split your router’s wireless bands to force the TV onto the 5GHz network, and then assign the TV a static IP address to prevent DHCP lease timeouts. Most smart TVs suffer from terrible internal antennas that get confused when a router tries to automatically switch them between 2.4GHz and 5GHz bands. By forcing a dedicated connection, you stop the drops entirely.

Prerequisites and Troubleshooting Notes

Before you begin, ensure you have your router’s admin login credentials (usually printed on a sticker on the bottom of the router). Common mistake: Do not just unplug the TV and plug it back in. That clears the temporary cache but doesn’t fix the underlying routing collision that is causing the drop. You need about 10 minutes to log into your router and make these permanent changes.

Table of Contents

• Step 1: Separate Your Router’s Wi-Fi Bands
• Step 2: Connect the TV to the 5GHz Band
• Step 3: Find the TV’s MAC Address
• Step 4: Assign a Static IP Address in Your Router
• Step 5: Change the DNS to Google or Cloudflare

Step 1: Separate Your Router’s Wi-Fi Bands

Modern routers use “Band Steering” (sometimes called Smart Connect). This broadcasts one single Wi-Fi name and tries to seamlessly move your devices between the long-range 2.4GHz band and the fast 5GHz band. Smart TVs hate this. When the router tries to move the TV, the TV drops the stream.

Log into your router’s admin panel (usually via 192.168.1.1 or through the companion app). Find the Wireless settings and disable “Smart Connect” or “Band Steering.” Rename your networks so you have two distinct names, like HomeNetwork_2G and HomeNetwork_5G.

Step 2: Connect the TV to the 5GHz Band

Now that you have two distinct networks, go to your Smart TV’s network settings. Forget the old network entirely. Scan for new networks and connect exclusively to your new HomeNetwork_5G. The 5GHz band has significantly less interference from microwaves and Bluetooth devices, ensuring a much cleaner signal for streaming 4K video.

Step 3: Find the TV’s MAC Address

You need to tell your router to never change the TV’s internal IP address. To do this, you need the TV’s MAC address (its physical hardware ID). Navigate to your TV’s Settings > Network > Network Status (or “About TV” depending on the brand). Look for a 12-character string labeled “MAC Address” or “Wi-Fi MAC.” Write this down exactly as it appears.

Step 4: Assign a Static IP Address in Your Router

Go back to your router’s admin panel. Look for a section called DHCP Settings, LAN Setup, or Address Reservation. Add a new reservation. Input the MAC address you just wrote down, and assign it a permanent IP address high up in your subnet range (for example, 192.168.1.200) to ensure no other device accidentally claims it while the TV is turned off.

Step 5: Change the DNS to Google or Cloudflare

Sometimes the TV doesn’t lose Wi-Fi; it loses the ability to resolve web addresses because your ISP’s default DNS servers are terrible. On your TV, go into the Advanced Network Settings. Change the DNS settings from “Automatic” to “Manual.” Enter 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare). Save the settings and restart the TV.

Frequently Asked Questions (FAQ)

Wrapping Up

Smart TVs are basically giant smartphones with very cheap wireless chips inside them. By taking control of your router and forcing the TV to behave using a static IP and a dedicated band, you remove all the variables that cause connection drops.

Did separating your Wi-Fi bands fix the buffering issue for you? Let me know below.