I have come across a few faulty LED drivers which cause the LED panels to flash on and off. Often this occurs after the driver/panel has been left switched on for a while.
I've opened the drivers up and noticed some swelled capacitors - usually on the primary side i.e. the main 400V capacitor.
Instead of constant voltage, these drivers are constant current - typically 33-40V at 1000mA output.
How can I test that replacing the capacitors has solved the problem on the bench without the LED panel? If I connect a standard 240V halogen lamp or an LED version, the lamps just flash on and off.
I've opened the drivers up and noticed some swelled capacitors - usually on the primary side i.e. the main 400V capacitor.
Instead of constant voltage, these drivers are constant current - typically 33-40V at 1000mA output.
How can I test that replacing the capacitors has solved the problem on the bench without the LED panel? If I connect a standard 240V halogen lamp or an LED version, the lamps just flash on and off.
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