Hello everyone. I have a request & question. I noticed that one segment of the RGB LEDs glows in a different color. It turned out that one of the component colors - green - was not lit. The question is...Where should I look for the fault? Power supply or one of the 3 resistors on the faulty...

Ring the paths of a given diode segment if possible, check the supply voltage. Most likely, one of the paths was interrupted or a cold solder phenomenon occurred, e.g. at the resistor - an open circuit.

Is it possible that one of the cathodes/anodes in one of the diodes has burned out and the entire segment is not connected?

I think it may be the resistor's fault. What power supply are you using? to the colleague above: the phenomenon of cold solder, in the case of LED strips, occurs after the first connection, very rarely after long-term use. Regards akb-poland.com

Looks like a simple task. If you know that there is no green color and the tape has marked paths, grab a meter. It can be assumed that the resistor marked 151 has failed. For example, you measure the voltage before and after the resistor. Of course you can measure resistance. It could happen that the resistor became disconnected from the path. but the solution is not in discussion but in action.

Faulty RGB LED Strip: Identifying Issues with Green Color and 151, 301, 151 Resistors

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#1 10908877 17 May 2012 23:46

bercik_gsi bercik_gsi

Level 15

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Post #1
10908877 17 May 2012 23:46

Hello everyone. I have a request & question. I noticed that one segment of the RGB LEDs glows in a different color.

It turned out that one of the component colors - green - was not lit.

The question is...Where should I look for the fault? Power supply or one of the 3 resistors on the faulty section? I took a closer photo, these are their denominations: 151, 301, 151.

If one went, how can I check which one?
Could anyone give some good advice?
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#2 10908896 17 May 2012 23:52

JohnySpZOO JohnySpZOO

Electric installations specialist

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Post #2
10908896 17 May 2012 23:52

Ring the paths of a given diode segment if possible, check the supply voltage. Most likely, one of the paths was interrupted or a cold solder phenomenon occurred, e.g. at the resistor - an open circuit.
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#3 10909017 18 May 2012 01:29

bercik_gsi bercik_gsi

Level 15

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Post #3
10909017 18 May 2012 01:29

Is it possible that one of the cathodes/anodes in one of the diodes has burned out and the entire segment is not connected?
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#4 10972377 06 Jun 2012 01:46

akb-poland akb-poland

Level 1

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Post #4
10972377 06 Jun 2012 01:46

I think it may be the resistor's fault. What power supply are you using?
to the colleague above: the phenomenon of cold solder, in the case of LED strips, occurs after the first connection, very rarely after long-term use.

Regards
akb-poland.com
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#5 10972499 06 Jun 2012 07:39

mczapski mczapski

Level 40

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Post #5
10972499 06 Jun 2012 07:39

Looks like a simple task. If you know that there is no green color and the tape has marked paths, grab a meter. It can be assumed that the resistor marked 151 has failed. For example, you measure the voltage before and after the resistor. Of course you can measure resistance. It could happen that the resistor became disconnected from the path. but the solution is not in discussion but in action.
#6 10975435 07 Jun 2012 00:40

ubeczek ubeczek

Level 11

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Post #6
10975435 07 Jun 2012 00:40

bercik_gsi wrote:
Is it possible that one of the cathodes/anodes in one of the diodes has burned out and the entire segment is not connected?

There is a possibility
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Faulty RGB LED Strip: Identifying Issues with Green Color and 151, 301, 151 Resistors

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