My sister in law who works in an organization that deals with mentally and physically challenged people uses a lot of these kinds of devices that produce either relaxing sounds along with nice colors. This device that was brought to me today for repair is one of them.

The dome is a rotating one and lights from inside that dome should light up giving nice relaxing lights across the room. The problem with this device is the moment it was powered up with 220 AC nothing happens, no rotating dome no any light come one. Let us find out why.

I have fixed and maintained a lot of devices that like before. When it comes to LED lights involved, the device will shut down simply because one or two of the LED lights inside became open. That was my focus in this repair.

That is what inside this device. The first step was to check out the LED lights and see what is going on there.

Using my multimeter set to diode setting I checked all the lights. One of them only was working and the other two were dead. That explains why the device was not working.

The only problem is that these LED lights produce blue color and the LED lights that I have in the shop are white. I checked with the customer about that and she was ok as long as they see some blue in that device she said.

There are the dead LED lights and I have different kind of LED lights but I was willing to give it a try and see how it looks like.

I know it does not look pretty at this time but that was not my objective. The result is what I am after in this device. So I replaced the two dead LED lights and gave it a try. Take a look

I was glad to see some blue rays in these lights and I was happy with the result.

I put the dome back on and tighten it with the screw as you can see on top and powered up the device. The dome started to rotate and the LED lights were on giving the expected color and motion.

Mission Accomplished.

This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment.

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Note: You can check his previous repair articles in the link below:

https://www.electronicsrepairfaq.com/turkish-made-welding-machine-brought-back-to-life