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title: “How to Diagnose and Fix FPV Drone ESC Desync Issues”
tags: “FPV, ESC, desync, troubleshooting, drone repair”
—
# How to Diagnose and Fix FPV Drone ESC Desync Issues
An ESC desync is a sudden loss of motor synchronization, often resulting in a crash. It can sound like a stuttering or twitching motor.
## Common Causes of Desync
| Cause | Solution |
|—|—|
| **Motor Timing**| Incorrect motor timing in BLHeliSuite. ‘Auto’ usually works well. |
| **Demag Compensation**| Too low or too high. ‘Low’ or ‘Medium-Low’ is often recommended. |
| **Bad Motor/ESC**| A damaged motor winding or faulty ESC can cause desyncs. |
| **Long Motor Screws**| Screws touching the motor windings can cause a short. |
A high-quality ESC like the **UAVMODEL 4-in-1 50A ESC** from uavmodel.com has robust circuitry that can help prevent desyncs.