I bought a color changing LED light kit for my basement and found out it wasn't long enough so I bought another. I connected them together with an LED amplifier and it seemed to work perfectly. Except when I came back the next day to turn them on again, they didn't work. I found that I needed to unplug the PS and re-plug it and viola, the lights worked again. This happens every time now when I want to turn them on. I've replaced the PS with a spare and it's the same results. I'll mention that disconnecting the PS from the LED controller does not fix it, it has to be unplugged from the outlet to fix it. Anyone know where I might be going wrong?

Here is my PS PS

And my LED controller controller

And amplifier amp

Wiring Diagram

Here are some links to the components I used:




  • How did you wire it? – Harper - Reinstate Monica Nov 8 '17 at 3:07
  • @Harper, The controller connects to the amp input, then I have a splitter coming off the amp that connects the 2 led strips. – Preston S Nov 8 '17 at 3:30
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    You can't just give a one-sentence tossie, you need to give a lot more information than that, or none of us will be able to help you. Diagram the whole thing out, every wire, and post a pic. – Harper - Reinstate Monica Nov 8 '17 at 4:58
  • I included a diagram as best I could and links to some of the components I used. – Preston S Nov 8 '17 at 16:40
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    sounds like it's over-heating to me. – dandavis Nov 8 '17 at 21:17

OK here's the problem. An amplifier does not actually combine power supplies. It simply uses the 5 input channels only as a signal to switch the power supplied to its input. All the strips downstream of an amplifier are powered only by the supply to the amplifier!

So what you've done is hung all the LEDs on the #2 power supply, which is only sized for a single 16' (5m) strip.

The other power supply drives nothing but the controller and amplifier's internal loads, which are very small. That might be a problem too.

Option 1, leave it like this, and make sure power supply #2 is sized to drive all LEDs. I don't get why to have supply #1 at that point, just split power off supply #2 and do it all with one.

Option 2:

Move the splitter so it takes the output of the controller and splits it to strip 1 and the amplifier. Thus, power supply 1 will supply the controller and strip 1. Power supply 2 will supply only the amplifier and strip 2.

enter image description here

  • I would agree with you but its just the opposite, the PS feeding the controller is the one that stops working and needs to be unplugged not the PS feeding the AMP. The controller is rated for 2A which will power a single strip, the AMP provides 6A which should power 3 strips, I only have it powering 2. – Preston S Nov 10 '17 at 1:09
  • @PrestonS different problem then, that power supply is crowbar'ing because it has no load at all. Either way, the setup ain't right. A 2A supply can only power about 5' of RGBW strip at full brightness with all lights blazing. – Harper - Reinstate Monica Nov 10 '17 at 1:12
  • It came as a kit. The 2A PS, controller and single 5M strip. I bought 2 of them and combined them together. – Preston S Nov 10 '17 at 1:16
  • Wouldn't the 2A PS always deliver some load due to the IR receiver? What do you mean by "crowbar'ing" – Preston S Nov 10 '17 at 1:17
  • I just noticed where power supply #2 already is 6 amps. That's good for about 15' of strip at full brightness. A crowbar is when a power supply shuts itself down because some supply parameter is out of bounds, too much current, too little current, etc. The IR receiver/controller will take a ridiculously tiny amount of power, and that could trip it. Or the unit could be bum. Anyway, why have 2 for the tiny amount of load on PS 1, just fork off PS 2. – Harper - Reinstate Monica Nov 10 '17 at 1:25

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