fan1080 Posted November 1, 2010 Share Posted November 1, 2010 HI Guys,Just finished building my 3rd CTB19PC kit. First 2 units are working fine, but channels 9-12 not working on third one, all other channels are fine. Tried a reset, didn't help. Ran through the troubleshooting guide, all looks ok. Can't see any obvious solder bridges/shorts, and solder joints look good.I'm a tech, so a schematic would really help, or any other advice would be appreciated.How about a re-loading the firmware, would that be advisable at this point? Link to comment Share on other sites More sharing options...
Anthony in Houston Posted November 1, 2010 Share Posted November 1, 2010 How are you checking to see if it is working?Anthony Link to comment Share on other sites More sharing options...
fan1080 Posted November 1, 2010 Author Share Posted November 1, 2010 Hardware utility Link to comment Share on other sites More sharing options...
fan1080 Posted November 1, 2010 Author Share Posted November 1, 2010 Pretty sure I found the problem.Reading through the LORwiki, the exact same issue was noted. Turns out I have R1 and R18 in the wrong positions....... whoops!!!I'll swap those around tomorrow when I get to work, give it another test tomorrow night and let you all know how I made out.Thanks,Mark Link to comment Share on other sites More sharing options...
Alan C Posted November 1, 2010 Share Posted November 1, 2010 fan1080 wrote: . . . Turns out I have R1 and R18 in the wrong positions . . .That would prevent channels 9 to 12 from working.Regards,Alan. Link to comment Share on other sites More sharing options...
fan1080 Posted November 1, 2010 Author Share Posted November 1, 2010 Alan C wrote: fan1080 wrote: . . . Turns out I have R1 and R18 in the wrong positions . . .That would prevent channels 9 to 12 from working.Regards,Alan.Yup.And so much for being a well-intentioned electronics tech, huh? lololololol A little embarrassing to say the least. But, alas, I can get back to the other preparation tasks for this year's display!!! Link to comment Share on other sites More sharing options...
fan1080 Posted November 2, 2010 Author Share Posted November 2, 2010 As promised, I'm back with an update........Swapped the resistor networks to their correct positions (noob mistake, very embarrassing :shock:). Re-tested it tonight and all is working now. Lesson learned: Don't assume anything. There are 5 resistor networks in the kit, 4 of one value, 1 is a different value. They look identical (other than the value printed on the side of them..... lol). You would think after building 3 of these so far I would have known that. I think I was just a tad over-confident building the 3rd one and didn't pay close enough attention.Now, off to do some sequencing!!!Cheers,Mark Link to comment Share on other sites More sharing options...
Alan C Posted November 3, 2010 Share Posted November 3, 2010 The resistor packages are also different configurations. One of them has a "common" terminal with several equal value resistors off it, the other is individual resistors.Regards,Alan. Link to comment Share on other sites More sharing options...
crackchecker Posted November 3, 2010 Share Posted November 3, 2010 Wow. I wish my one channel not working was so easy to fix.... Been back and forth with Dan via e-mails today. Looks like I'm getting a different board sent out to me. Doesn't fill me with confidence of my board building skills if I killed one channel without even runing a show through it. And I got one more board to put together! good greef. Thought I looked over this board pretty closely, the next one I'll put under a microscope. Almost literally. Link to comment Share on other sites More sharing options...
crackchecker Posted November 17, 2010 Share Posted November 17, 2010 After talking to Dan again. He suggested that I check all the components on that channel. I pulled the board out and decided to re-solder everything with a hotter iron than I had used before.Just ran it through the HU and EVERYTHING works now. YaaaaaaJust finished soldering my next board up with the hotter iron too. Expecting no problems.. Link to comment Share on other sites More sharing options...
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