Have I blown RGB controller?


Active Member
I bought some tape and controller a while back. First tests proved all was OK, before I got out the solder iron.

I was soldering it this morning and now seem to have problems. I've soldered 2 tapes together giving me a total run of 7.5m @ 60/m.

I've got the correct PSU for the job and bought this controller as it is supposed to do 4a per channel. http://www.ebay.co.uk/itm/12-24V-12...610?pt=LH_DefaultDomain_0&hash=item4841e34c82

Initially it seems I soldered the middle join incorrectly as I wasn't getting any blue at all. and only half of one side would illuminate (although all multimeter tests proved current was bridging the join). I then dual fed the tape from either end and when I took out the middle bridge I had the correct colours at both ends (with hot power straight from the PSU)

But now dual feeding with no join the controller can't do a very strong blue, and doesn't appear to respond the the remote. I tried it on a short cut off strip that still had the original connections on and was behaving the same as the longer 2 strips.

Question is have I some how inadvertently blown the controller? I can get solid colours just touching the negative to the corresponding terminals (no controller in the loop) on each tape at full intensity, but when I put the multimeter across the controller still get 12v down each colour even blue which strikes me as odd if it is fried?

If I have I'd be tempted to get one of these instead and put an RGB amp in the loop as the remote should be easier to program into my harmony..


Any help appreciated.


Yep - you've nadgered it!

I must admit that I was shocked when I first dismantled one of these PWM controllers ('cos thats what I do!). The output devices are not your usual DPAK Power MOSFETS rated at >17A but tiny SOT-23 devices that are surely not able to handle 4A continuously. Having said that, I've blown up a few Power MOSFETS by being complacent - e.g. unplugging LED strip from controller whilst still running - not recommended!
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