One strip of lights staying green

grahami2006

Full time elf
Joined
Jan 19, 2012
Messages
197
Location
Bathurst NSW
I have 6 light strips on my roof and one of them does not change colour to the sequence. It is permanently on green and even when sequence finishes it does not go out but stays green. Any ideas?
Thanks
Graham

BTW these are being controlled by a 27 channel controller. I have tried setting a short sequence to white and 5 go to white but this one still stays green.
 

BundyRoy

Dedicated elf
Joined
Apr 9, 2014
Messages
1,026
Graham my guess is that that strip is not getting enough voltage. I have had issues with lights staying on when the voltage is too low. Is it at the end of the line in terms of where the power is applied to the strip.
 

David_AVD

Bite my shiny metal ass!
Community project designer
Generous elf
Joined
Jun 12, 2010
Messages
4,169
Location
Victoria Point (Brisbane)
There could be a couple of reasons:

1) The most likely is a shorted MOSFET on the 27 channel board. This is easily tested by following the wiki article here. In this case the strip would be green as soon as the 27 channel board is powered up (no sequence running).

2) The other possibility is a duplicate channel in your sequence is always on. If this were the case the strip would go dark after the sequence ends.
 
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