Kim Posted November 30, 2007 Share Posted November 30, 2007 Hi All,After running fine for 3 days, channel 9 and 10 seems to have problems turning off. most of the time during a show. They will stay lit. However, they will turn off every 10'th time or so. I tried to measure the voltage on R20 and R21 but as soon as i touch a resistor (Opto side) with the testpin, the channel turns off!. Im running with 230 volts and the opto to triac resistors is 330 ohm.¨I have tried to reset the controller.The load is 200 LED's on every channel. Channel 3 to 8 has the same load and works fine. The LED strings is a type with transformer.Any ideas?/Kim (Denmark) Link to comment Share on other sites More sharing options...
cmoore60 Posted November 30, 2007 Share Posted November 30, 2007 Was this a board that you assembled? If so, then possibly a poor solder joint in the circuit for those channels.The other thing to try is a rest of the board.Chuck Link to comment Share on other sites More sharing options...
Kim Posted December 2, 2007 Author Share Posted December 2, 2007 It's the Blue board.Problem solved. For some reason i needed to put a little more load on the two channels.With a extra string of 100 LED's on each channel, the channels work fine again!Regards/Kim Link to comment Share on other sites More sharing options...
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