Reattaching Power Cable to EK-04 Controller for LED Christmas Tree Lights

Question

Hello The power cable from the LED Christmas tree lights controller broke off. Below are the photos. Where to connect the 230 V AC power supply? (it would be best if someone marked it in my photos)

Pedros050 · Answer

In the first photo, the last two pins on the right side supply 230V power.

gumisie · Answer

Just like the post above.

golec2604 · Answer

It`s impossible to be there. Because the wires go to the LED circuits from these places.

All the wires in the picture go to the LEDs. The 230V cables broke off from the inside of the controller and I don`t know which pin they were soldered to.

From what I see, there are 5 circuits for controlling the diodes (5 pins/cables from the right side of the controller) plus a sixth pin/common cable.
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For now, I have cut off the controller and connected these five cables into one and connected them directly to the 230 V power supply.

It only works that the lights stay the same all the time. No driver, no programming option.

gumisie · Answer

But it`s possible. Before I wrote #3, I looked at an identical driver. Regards.

golec2604 · Answer

APPROX. So how does it work??

gumisie · Answer

The anodes of the LEDs are probably switched on with thyristors and the cathodes as in the attachment.

klamocik · Answer

If these are LEDs, a direct 230V power supply will quickly kill them, I suspect they are light bulbs, quickly return to the board.

golec2604 · Answer

clapper - it`s ice cream!

to the gummies: something doesn`t suit me here because:
1. I also have other lamps and there is also an EK-04 controller, and the structure of the entire board is completely different than the one I am asking here on the forum.

2. Secondly, these LEDs are all of one color, so there are no RGB anodes.

3. Where you wrote that the 230V AC power goes there, there are also cables for the LEDs from the controller
All the cables in the photos go from the controller to the LEDs. There are no 230V power cables here, because they are torn off from the inside of the controller.

But I powered up the power supply where you asked and one LED circuit is on all the time - it is not controlled by the controller. The remaining LED circuits are controlled by a controller.

bajer1 · Answer

Hello
In my opinion, as my friend wrote, the 2nd right one is the power supply to the rectifier bridge.
The first one on the left is common to all LEDs, the middle 3 are LED controls, if one set is lit constantly, it is a shorted thyristor.
The system may also be damaged beyond repair.
Regards

Pedros050 · Answer

@golec2604 I had the same Chinese Christmas tree lights and they were connected as in the photo, the power supply was as we described, it`s a one-time switch, the whole controller, it flashed, there`s a button to change the light and the lights go out, it`s PLN 10 and it`s not worth repairing.

golec2604 · Answer

I know it`s Chinese shit. Except it worked well on previous Christmases. Now we took it out of the box and as it turned out, the wires from the 230 VAC power supply were torn off.
So I think I`ll solder them. I took it apart and looked and there was no place for a 230V power supply.
So I`m asking here on the forum. Soldering cables to the controller is even worth it, even for PLN 10 it takes a minute of work.

Following your advice, I soldered it as follows:

Well, I say that one circuit is not controlled. Well, in my opinion, this is the circuit to which the 230V voltage is soldered, because it is a direct connection, so how would the controller control it? In my opinion, the 230 V connection must be in a different place.

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Added after 3 [minutes]:

klamocik wrote:
If these are LEDs, a direct 230V power supply will quickly kill them, so quickly return to the board.

Why would it finish them off?

Rezystor240 · Answer

The board has a rectifier bridge. Powering the LEDs directly from the mains will quickly burn them out. Back tensions and things like that.

gimak · Answer

After all, if these wires were soldered somewhere and broke, there should be some traces of the break left on the board.

marekhab · Answer

In post #12, the power supply is well connected,
you need to check whether the thyristors are conducting (probably PCR-400J), set the meter to measure direct voltage and measure the voltages in points 2, 3, 4 in relation to point 1, I marked it in the attached photo.
At point 1 there is a positive pole, 2, 3, 4 negative.

boguslaw robak · Answer

Hello, the two on the right are probably from the socket at the end of the lamps, best regards.

gumisie · Answer

You didn`t mix up the wires when you re-soldered them after this treatment?

marian1981.02 · Answer

Or maybe it was the case that one chain was lit permanently?

Przybyłek · Answer

There are 5 LED cables because there is probably a socket at the end to connect another chain. If you cut all the cables, you simply connected them wrong. Where there is 230V, you had two cables because they go to the socket at the end of the chain. One circuit from 3 is permanently on fire because you replaced the phase cable with the socket at the end of the chain. Connect the cables to the socket at the end and connect them in parallel with the power supply of this board. The cathode is common to all LEDs, and the other three are indifferent.

Zenon407 · Answer

Something went wrong - there is nothing left (or it fell out somewhere) what could be in this place?

gumisie · Answer

Wherein? Mark on the photo.

Adam-T · Answer

I think it`s over the bridge. I think it was 100kΩ there.

Zenon407 · Answer

I thought you could see it - upper right corner And how is it described on SMD? 100R is how many ohms? 100? Will this be ok?

kicajbas · Answer

100R is 100 but: and that`s already 104 Regards ...so as not to fill in empty points. 100 in SMD is of course 10Ω; the third digit is the number of zeros - sorry

gumisie · Answer

100Ω 100kΩ: 104 10kΩ: 103 1kΩ: 102 100Ω: 101 But you can come across other markings. E.g.: 1001 = 1kΩ 1002 - 10kΩ Link

Zenon407 · Answer

@gumisie Thanks for your professional opinion!

gumisie · Answer

You`re welcome. All this can be found on the Internet. Google, the right phrase and get to work. :wink: Regards.

Zenon407 · Answer

I added this one because I didn`t have a 104 this size... It flies nicely! :) I found it - maybe it will be useful to someone

gumisie · Answer

Probably. 104 = 100 kΩ 205 = 2 MΩ

Adam-T · Answer

I didn`t say 100k

Reattaching Power Cable to EK-04 Controller for LED Christmas Tree Lights

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