Theodor LED Chandelier Not Shining: Lamp Failure Causes, Resuscitation Possibilities, PCB Issues

Can you tell me what could have happened to the lamp and is there a chance to resuscitate it? it's all about THEODOR LED lamp. I bought it less than a year ago and she suddenly refused to obey. Earlier, there were no symptoms that would suggest failures - the only thing I noticed was that a few moments after switching on, you could hear 2-3 crackles - as if the plastic was stretching. One evening, the lamp just did not light up. But it was noticeable that the current reaches the LEDs and these little squares sparkle very delicately (you can only see it in the dark). I took off the lamp and connected it to another power supply and I have the same, after turning on the power, a very delicate glow runs through the LEDs and nothing happens. I opened the box in which the PCB is with various transformers, but none of them fell off or looks broken. Do you think there is a chance for a nap? who possibly deals with such things? The service of these lamps is in Germany - it rather misses the point of sending the lamp to the service.

You would have to look at this lamp. As long as the diodes are not damaged, they can certainly be repaired.
Are there any markings on those "transformers" that are inside? Maybe post a photo.

I agree with the previous speaker, you need to see the lamp. However, I would bet on damage to the capacitor.

And I bet on damaging one of the diodes. The diodes are usually connected in series, you have to find out how the power of these diodes is going, if you have a meter. You write that you have replaced the power supply with the correct voltage, you have measured the supply voltage. With a little skill, it's definitely fixable.

My friend shon the author of the topic is a woman, the approach to the matter must be different. Unless I'm wrong.

Witold5 wrote:

My friend shon the author of the topic is a woman, the approach to the matter must be different. Unless I'm wrong.

You are not mistaken Witold5 I'll take pics as soon as I get home. I am probably too thin in my ears to repair myself, even though I am familiar with a soldering iron and a screwdriver I wonder whether to look for "Mr. Kazio" - the handyman - or is it better to return it to some point ... and if so, what?

A repair point will be hard to find, because today they are rather "exchangers" and not repair points. If you have any Kazia-handyman, it's probably a good option. Or maybe you will get a warranty repair. Find it.
You need to find someone who knows electronics.

lamp pics

Many electronic components are not there and the kumaty electronics should be able to handle this board.

Modest electronics. Kumaty Kaziu can handle it. But these LED strips are also for review.

It looks like a classic transformerless power supply. The most likely damage is one of the diodes, which is nothing special with this power solution.
The truth is that measuring the voltage at the output of the power supply - if it is close to the maximum value, one of the diodes or the connection between them is damaged at 95%.

haniaw
You are from Warsaw (or at least that's what it says in your profile), if you want to contact PW, maybe I can help.

Thank you all for your commitment. It is a pity that with the help of some photographers I will not be able to solve the mysteries of what broke, but the seller undertook to repair or replace the lamp and send the lamp to the service at its expense May it not turn out that my curiosity and opening the box with the plate deprived the equipment of its warranty

Colleague Artur k. did not help, did you not use the help?

A friend wrote and mentioned that she would try to advertise. In fact, this is the best solution, because if there are several dozen LEDs powered directly from a transformerless power supply, it will always break. All you need is overvoltage in the network.
Apparently, for example, LNK304 is an expensive integrated circuit for a Chinese.

In fact, if it is possible, you must use the complaint. Personally, I would like to "see" this contraption closely.

I don't think there is much to watch. You can see the transformerless power supply, I suppose that apart from it there are only diodes connected in series - judging by the output voltage of the power supply - about 50 diodes.
They make such inventions, and then unfortunately it breaks down. I have already seen chandeliers with current sources, e.g. 1500mA / 33-44V, I was almost sure that there were 5W LEDs - unfortunately, there were 10 strips connected in parallel and on each of them 14 LEDs connected in series.
Why did they do that? Because it would not fit into the base of 10 power supplies, not to mention the cost. So they gave one power supply with greater efficiency than needed, but at the same time with a slightly lower voltage than would be required for the diodes to work with the nominal current. Everything works beautifully until one of the LEDs goes out or there is a break. Theoretically, nothing should happen because the voltage is lower, but it does.