My LED ceiling lamp is flashing continuously when I open it. What's the reason?
Just change the filter capacitor on the drive. I've done this because the capacitor is punctured and the drain current is high.
Nominal 18*1, not LED, see how much no-load voltage.In accordance with the 18*3.3=60V, then the minimum load of 65V in order to properly lit the 18 string of lights. Your new power supply is nominal 40-65V, which is the maximum limit of your power supply. The voltage is low and the light is not normal.As you said, the early stages were normal, and the components of the internal voltage control were faulty. Your actual lamp on the LED lamp may be relatively high voltage (normal LED lamp in 2.8-3.4V).You need to buy the nominal output voltage of 70V (assuming the lamp voltage is 3.4V, the total voltage is 3.4*18=61.2V, +5V=66.2V. This extra 5V is used to adjust the current change after the LED total voltage change, and the constant current 350mA drive power can be substituted.
As a matter of fact, I found the following problems for most of the light bulbs sold online after I applied the power. The quality of the lamp 1. itself, if not found in light weight, internal driving power without spots, you can replace the lamp. 2. itself, the focus drive power is very general! Note is very general, PCB plate production is estimated that mass production is not high, less than ten pieces. Power to the manufacturers standards they are the ideal power, no amount of surplus, not taking into account the drive power consumption, they will use the maximum power of the drive to give you light bead number, therefore, in the case of no driver found burned, can reduce the load. It is to reduce the amount of light. This is when the switch is turned on and the light is turned on. I personally test the drive board components.
The LED drive is not necessarily suitable, and its main parameters are the output current and voltage. The original driving output current should be smaller, with fixed lamp, so flicker. The new driver may be out of voltage now, so it's not lit. Not only the power and current, but also the output voltage.L
My led ceiling lamp box has a strong drive to the magnet in the lamp disc, once in a while I try to open the drive box, leaving only the circuit board on the side, the phenomenon of flashing lights after the elimination, my analysis may have relationship with the strong magnetic block, so I will bare board, make the vast the edge effect is good, use now.My analysis may be wrong, the previous summer, every day when hot and flash, and now into the late autumn, not flashing, considering the environmental temperature related, open the closed box, but also to reduce the environmental temperature. Perhaps 8 of these chips are sensitive to temperature
