Troubleshooting Check

300w led grow light has 288 led bulbs with 12 rows and 6 power suppliers (six bigger black plastic boxes inside light), each power supply controls 2 rows bulbs, If 2 rows bulbs are stop lighting,  first check if connection of cables clips is loosing or separated.

If all cable clips connections are in work condition, located no-work rows power supply, disconnect it, and connect to other power supply(working, total 6 power suppliers), turn on power, if no-work rows are lighting, this indicates power supply failed. we will send a power supply to replace it.

Screw off box

Open the light box

Check clips and cable connection

Power suppliers inside view

After testing with switched power supplier,  if  no-working two rows are still not lighting, the panel need to be sent to factory for repair.