Why did the LED controller fail?

Question

Electronics

Hello! I ran into a problem, and all hope is only for you)) The
following RGB tape scheme was assembled:
220 is supplied to the switch, 220 from it goes to two transformers (eleganz 250w) connected in parallel, from them it goes to the controller (eleganz 360w / 720w 12v / 24v), to which 6 tapes of the same company are connected up to 5m (26m × 14.4 W = 374.4 W). (From the controller to each of the tapes no more than 3m of wires)
For more than a month, everything has been working properly. (Included not often) After continuous use of the tape during the night, I noticed that the green color was gone. Also before that there were cases that the tape spontaneously turned off after half an hour of use. But it turned on after restarting the transformers using the switch
. Tell me, what should I check first? Controller?
And how to find out the cause of the failure? Green didn't work
Thank you!

Answer 1

If one color disappears, but is restored, it is most likely the controller, and yes, check it first.
Eleganz 250w are not transformers, but switching power supplies, and you cannot parallel them. If you need more power, you need to take one more powerful PSU.
The power of the tapes is very different, and it is impossible to say how much power is on your 6 tapes, keep in mind that the power of Chinese power supplies / controllers, etc. in most cases is much less than stated and the problem may be precisely in this.
3m wires can also be very different, especially considering that the voltage is small, and the currents, respectively, are quite large. =)