Jump to content

Low Voltage across left side of D1 and D2


Recommended Posts

So this is my first time putting my own CTB16Kpc together and I've run into a problem. My LED doesn't light up. It did when I first finished putting everything together but I only had control over 3 channels (13, 15, and 16). I unplugged everything and re soldered a lot of the connections hoping that would fix the problem. I was also checking around with a multimeter and the board tipped over and came in contact with the support strip in my box and there were sparks. There is a tiny bit of blackening/damage on the outer connection of the resistor at station 12 but that's all I can find. So between that and the resoldering I lost my LED. I've followed these instructions http://www1.lightorama.com/PDF/Kit_Troubleshooting_Guide.pdf and have gotten to the step which reads: 

 

Check for 25 VAC by touching probes to the left side of D1 & D2, if not present or low, check voltage jumpers next to transformer, check all solder connections for transformer, fuse holders and voltage jumpers. Check that both C2 [& C3 for CTB16KV6] (big electrolytic capacitors) are properly oriented.

 

I am getting 15.7 VAC across D1 and D2 so I am assuming that is my problem. I have checked the solder connections it says too several times and C2 & C3 are properly aligned. I'm not 100% sure what it means by voltage jumpers, I've got my voltage selection set correctly and I have checked the solder to that piece a couple times. So I don't know where to go from here. I am afraid I damaged something when it tipped over but I don't know where to start checking for that. Any advice would be greatly appreciated! Thank you! 

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...