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I just wired up a pair of these I purchased at Allentown.  One of the Yellow lights in the set will not light.  Can these be replaced?  I can not see how to open these up or take the bulbs out?

 

Alternative problem?  Could I have a wire soldering problem?  I soldered the wires form the connector piece to the wires on the light pole.  There are 4 wires, GREEN, YELLOW, WHITE and BLUE.  Could one of these wires be a cold solder joint and effect control the yellow light?  Does anyone know which wire controls the yellow light so I know were to start?

 

Thanks!

Ron

 

Last edited by Ron045
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I don't have one but what I'd first do is swap the connectors that plugs into the controller box to confirm the problem follows the traffic signal.

 

As for the solder joints, it seems that it would only take a minute or so to touch-up each joint to rule those out without having to know which one goes to the yellow LED.

 

Assuming you want to fix it yourself rather than return it, I figure the signal heads themselves are one of those "no user-serviceable parts inside" so not meant to be taken apart.  That said, I found the following photo which suggests each head is a can and lid so it comes down to whether you can snap or pry off the lid.  Assuming you can get in and it's not a loose internal connection, a replacement yellow LED would be, say, 10 cents - shipping will be far more.

 

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If you read above from 2015 I had a bulb in a traffic light that would not light.  I had only noticed this after everything was installed.  After some thought, I did not want to tear it all apart, so I just left it as is and thought traffic lights burn out in the prototype too.

Four and a half years later, I decided to redo my road.  It was originally foam board but over time it started to warp, so I ripped it all out in favor of masonite.

During the teardown I remembered the traffic light would not light.  So I took it apart and found it was just a bad solder joint on the wire to the yellow light.

All is well.  Pics below to show how the light was disassembled.  

First, use a hobby knife to break the seal and get some separation.

IMG_20200511_171116997

One you get a little separation between the two halves, then a common screwdriver can be use to finish removal.

IMG_20200511_171027582

The two halves are removed and you have total access to lights and wires.

IMG_20200511_170911532

Press fit the halves back together and test the lights.  I used a 9v battery.

IMG_20200511_171159183

Notice the jaws of my helping hands scratched the pole.  I will weather these, so I'm not worried about it.  But if you like yours shiny and new, be careful and use something like a cloth to put in the jaws of the helping hand.

Have Fun!

Ron

 

 

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