TCL TV 4 SERIES ROKU WIFI WON T CONNECT General Troubleshooting
| CONF | DIAGNOSIS | PART MATCH | ACTION |
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85%
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Wi-Fi / Bluetooth Wireless Module
The internal Wi-Fi module in TCL 4-series TVs frequently suffers from thermal fatigue, leading to intermittent signal loss or a total inability to detect wireless networks. Replacing this modular daughterboard is the standard hardware fix when software-level network resets fail to restore connectivity.
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CHECK PRICE |
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10%
CONF
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Main Board
On certain revisions of the 4-Series, the Wi-Fi controller logic is integrated into the main board or the interface port on the main board fails. This is only recommended if replacing the Wi-Fi module does not resolve the connectivity issue.
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CHECK PRICE |
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5%
CONF
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Wi-Fi Module Ribbon Cable
Corrosion or loose seating of the FFC (Flat Flexible Cable) between the main board and the Wi-Fi module can cause communication errors. Inspecting and replacing this cable ensures proper data transmission to the wireless hardware.
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CHECK PRICE |
DIY Repair Guide
Watch exactly how to replace the Wi-Fi / Bluetooth Wireless Module.