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 Some menorah LEDs don't light up
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By: d777 (offline) on Saturday, December 04 2010 @ 01:36 PM PST (Read 1647 times)  
d777

I think I did a decent job soldering all of the contact points, but some of the menorah LEDs don't light up :-(

http://evilmadscience.com/tinykitlist/44-menorah

I even went back and checked them all with a magnifying glass.

Any thoughts on debugging?


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By: Windell (offline) on Saturday, December 04 2010 @ 01:50 PM PST  
Windell

Hi d777,
Can you please describe *exactly* what you're seeing?

-WHO.


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By: d777 (offline) on Saturday, December 04 2010 @ 02:15 PM PST  
d777

Quote by: Windell

Hi d777,
Can you please describe *exactly* what you're seeing?
-WHO.



D8 (the one next to D1), D3 & D4 will not light up.
I have D4 set to be the shamash (i.e. did not solder across opt 1)
it also seems that the first "on" setting is the first two (D8 & D7) instead of just the first one (D8)

thanks in advance for any advice


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By: Windell (offline) on Saturday, December 04 2010 @ 09:03 PM PST  
Windell

I'm not sure how you get D8 next to D1; they should be on opposite ends of the board. Maybe you mean D0?

It sounds like you may have several solder bridges; accidental connections between things that should not. Does your circuit board have any "blobby" solder connections that might be connecting neighboring pins?


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By: d777 (offline) on Sunday, December 05 2010 @ 03:18 AM PST  
d777

Quote by: Windell

I'm not sure how you get D8 next to D1; they should be on opposite ends of the board. Maybe you mean D0?

It sounds like you may have several solder bridges; accidental connections between things that should not. Does your circuit board have any "blobby" solder connections that might be connecting neighboring pins?



you are correct - it is D0

as i mentioned, my soldering is "decent" (but not great) i will go back and look for possible blobby connections.


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