MEAN WELL RD-125-1224 very loud inductor work, dropping out voltage

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bremenpl

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Hello there,
I have 2 DC converters (model nr in the topic name) that dont work and they both act the same way. The iductor make a really uncomfortable sound and the output voltage keeps dropping (it looks like a capacitor would be charged). I replaced some caps but that havent solved the issue.

Here i attach a video that shows exacly whats happening. I would aprichiate any tips in repairing those DC adapters!
PS: You have to turn up the volume because the inductor sound is not very well heard.

 

I guess you are operating the power supply outside specified range. Did you notice the minimal output current specification in the datasheet? Did you try with higher load current?
 

FvM said:
I guess you are operating the power supply outside specified range. Did you notice the minimal output current specification in the datasheet? Did you try with higher load current?
Click to expand...

I didnt because what would be the use of a DC converter if it could not run without load?
Without any load at all it does act the same as on the video :/
 

I understand. Tommorow at work i will try it out with some small value resistor.

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