Jump to content
Light-O-Rama Forums

CTB16PC Help


PatrickNew

Recommended Posts

Help! During my show last year, channel 6 quit working on one of my controllers. I haven't worried much about it until now. I need every channel! I don't see any obvious places where it has shorted out on the controller, but there is some corrosion on channels 6,7,8 as you can see in the picture at IMG_0095

Any ideas of what I can check, or more importantly do to fix this? Thanks!

Patrick

Link to comment
Share on other sites

Separate from the repair, I would probably clean that area with denatured alcohol and a soft brush, so that material is not available to form traces next time it gets wet.

On the repair, as long as it is currently only the single channel, the most common component failure will be the three pin triac, followed by the 6 pin opto. Contact support, and they can either arrange to send you parts to do the repair yourself, or arrange to do the repairs themselves.

I would also carefully inspect the solder work and board around the resistor pack for that quarter of the board, the opto for that channel, and the triac as well. It is possible that it is a cold solder joint at one of those points, or a short.

Link to comment
Share on other sites

Here is a prime reason I have said before that I am going to and actually have sprayed my boards with clear acrylic spray paint. I did mask off the body of the Triacs so that the heat will sink better to the heat sink. I also masked off the chips in the sockets. Also masked off the two voltage regulators, the 16 pin header with a jumper in the 2nd position, and all of the quick disconnect spades. Oh, and last but not least is the modular connectors (tele and RJ-45). Between the corrosion and some have little critters getting on the board and burning a hole in the board.



I agree the triac or the opto might have gone bad. What did you have connected to this output?

Link to comment
Share on other sites

Thanks for the information. I'll contact support immediately. I had one strand of mini's hooked up to that channel. The controller was running one of my arches.. Not much of a load at all. Thanks.

Patrick

Link to comment
Share on other sites

Reason I asked about the load is that if you had a inductive load like a relay or a motor. It could have sent a counter EMF spike back to the triac and killed it. But it appears that this was not the case.

Link to comment
Share on other sites

Guest
This topic is now closed to further replies.
×
×
  • Create New...