# Solid Red LED

Source: https://forum.modalai.com/topic/448/solid-red-led
Category: Flight Core and Legacy VOXL (https://forum.modalai.com/category/9/flight-core-and-legacy-voxl)
Tags: voxl-flight
Posted: 2021-09-16 16:30:28 UTC by wilkinsaf
Replies: 1 · Views: 786

## wilkinsaf · 2021-09-16 16:30:28 UTC

Hello,

We are getting a solid red LED from our VOXL Flight. While we were looking at Odometry messages (In QGC) all of a sudden the FCU disconnected from QGC and one of the motors started spinning sporadically. 

Running ```sudo systemctl status voxl-vision-px4 ``` gives us the following error
```
WARNING PX4 DISCONNECTED FROM UART
```

The LED on the FCU appears to be solid red. 

Any suggestions would be greatly appreciated. Thank you

## Reply by Chad Sweet (ModalAI staff) · 2021-10-08 16:03:04 UTC

Sorry for the late reply, were you able to fix this? Based on more recent posts maybe reloading the [Flight Core Firmware](https://docs.modalai.com/flight-core-firmware/) fixed the issue?