James Hill Posted October 21, 2020 Share Posted October 21, 2020 I have a string of dumb RGBs controlled by a CMB24D card. The red and blue light up full but the green is quite dim. I thought it was the mosfet and changed it. Still an issue with the green. Any one out there encounter this issue? Possible the leader wire from the card to the LEDs got pulled a bit...would that cause a poor connection? If no one encountered this I may just run a new wire and see if that is the cause. Thanks in advance Link to comment Share on other sites More sharing options...
James Hill Posted October 21, 2020 Author Share Posted October 21, 2020 I used a second power supply to test the string by itself. All the LEDs light up fine...so I am thinking it is either the connector or the wire. Any thoughts? Link to comment Share on other sites More sharing options...
k6ccc Posted October 21, 2020 Share Posted October 21, 2020 If you move the string to another port on the CMB24, does the problem follow the string or the port? Link to comment Share on other sites More sharing options...
k6ccc Posted October 21, 2020 Share Posted October 21, 2020 You answered most of what I asked just as I was pushing Submit... Link to comment Share on other sites More sharing options...
James Hill Posted October 21, 2020 Author Share Posted October 21, 2020 Good thought....I will move to a different port tomorrow as I am done for today....will post results tomorrow. Always good to have someone else to think of things to try... Wish I did that before I changed the MOSFET!!!! Live and learn....L8R Link to comment Share on other sites More sharing options...
PhilMassey Posted October 21, 2020 Share Posted October 21, 2020 A nine volt battery with leads soldered to it, makes a good portable tester for dumb lights. Link to comment Share on other sites More sharing options...
TheDucks Posted October 21, 2020 Share Posted October 21, 2020 5 minutes ago, PhilMassey said: A nine volt battery with leads soldered to it, makes a good portable tester for dumb lights. Assumes they are not 5V LED's 😛 A mini-gator clip from R, G or B to the Minus terminal of the power input. (do NOT ever get + on those leads whil attached to the controller. SMOKE Link to comment Share on other sites More sharing options...
James Hill Posted October 22, 2020 Author Share Posted October 22, 2020 All is good in the Great White North here in Thunder Bay, Ontario, Canada. Thanks 'k6ccc' for the idea of moving the leads to another RGB channel. I should have thought of that but I get excited when trouble arises and don't think things through. Any how...the problem was the connection of wires to the connecting plug. The dumb LED's have a silver coloured wires (perhaps aluminum?) and the plugs are copper. Dissimilar metals oxidize/corrode...guess I will have to accept I will be running into problems again....just wait till spring please!!!! Thank you to all. Your ideas and thoughts were helpful....now back to some programming!!! Link to comment Share on other sites More sharing options...
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