uv_led_failure
Moderate
Elegoo · Resin (SLA/MSLA) 3D Printers
UV Light Source Failed or Output Below Threshold
Quick Answer
Error code UV_LED_FAILURE on your Elegoo Resin (SLA/MSLA) 3D Printers means: UV Light Source Failed or Output Below Threshold. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Run the UV LED test from the printer menu to verify if the LED illuminates (use UV-protective glasses and never look directly at the UV light)
2
Use a UV light meter or photosensitive card to check if the UV output is within specification
3
Power off and inspect the UV LED cable connection to the mainboard for corrosion or damage
4
Check the LED driver voltage on the mainboard with a multimeter (refer to the service manual for expected values)
5
If the LED array has dimmed significantly, it may need replacement as UV LEDs degrade over time
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Replacement UV LED array (model-specific, 405nm wavelength)
UV LED driver board (if mainboard driver section failed)
UV light meter for verification
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