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 First test step, some LED's not lighting
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By: Anonymous: Tr33x0rs () on Wednesday, February 09 2011 @ 08:44 PM PST (Read 2718 times)  
Anonymous: Tr33x0rs

I have done all the directions for the main blue board and blue leds. All my solder joints look filled in and clean, although not all my led's are lighting.. 10 out of the 30 are not lighting including;
16,26,36,46,56 and 61,62,63,64,65.. What did i do wrong?






       
   
By: Windell (offline) on Wednesday, February 09 2011 @ 09:00 PM PST  
Windell

Well, it sounds like you have an issue on line LED6. Check the soldering of resistor R6, that's the most likely location for the trouble. Also check the soldering on the chip. The pin of the chip that goes to R6 is the one that is directly in line with the pins of J2. Check the pins directly across the chip from there (continuing in a straight line, or slightly towards C6). You want to make sure that not only are the pins soldered well, but that there aren't any excess blobs of solder that could be making contact with the wire on its way to R6.


Windell H. Oskay
drwho(at)evilmadscientist.com
http://www.evilmadscientist.com/

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By: Anonymous: Tr33x0rs () on Wednesday, February 09 2011 @ 09:42 PM PST  
Anonymous: Tr33x0rs

It was the pin on the chip in-line with J2.. Thank you SO much for the help and the prompt response! I will let you know if I have any other problems, but so far for this being my first electronics soldering project I am having a blast! Thanks again!





       
   
By: Anonymous: Tr33x0rs () on Thursday, February 10 2011 @ 07:37 AM PST  
Anonymous: Tr33x0rs

My Bulbdial is officially done and luckily I didn't have problems with the red and green ring! Thanks again for the help! I really appreciate it!






       
   



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