# Telemetry link not working!

**URL:** <https://discuss.cubepilot.org/t/telemetry-link-not-working/8117>\
**Category:** HereLink\
**Created:** [3 January 2022 13:07 UTC](https://discuss.cubepilot.org/t/telemetry-link-not-working/8117 "2022-01-03T13:07:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sai\_Sudheer](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/sai_sudheer/32/4767_2.png) [@Sai\_Sudheer](https://discuss.cubepilot.org/u/Sai_Sudheer)\
**Post date:** [3 January 2022 13:07 UTC](https://discuss.cubepilot.org/t/telemetry-link-not-working/8117/1 "2022-01-03T13:07:55Z")

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Herelink is unable to establish communication with the Flight Controller (FCU) module.  
I have also observed that the video streaming and the analog controls are still working ( FCU is able to receive control signals from the Herelink joystick module.)  
I have tried with multiple Flight controller units, but could not find the actual cause of the issue  
Please guide me on how to proceed with the issue.

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<div class="post-metadata">

**Author:** ![Alvin](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/alvin/32/1000_2.png) [@Alvin](https://discuss.cubepilot.org/u/Alvin)\
**Post date:** [5 January 2022 07:31 UTC](https://discuss.cubepilot.org/t/telemetry-link-not-working/8117/2 "2022-01-05T07:31:01Z")

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Please verify the telemetry cable. This is what cause the problem most of the times.  
Also make sure your units are updated at latest stable. A bug with similar symptom was fixed in recent version.