12V Charger Not Charging: Rectifier from Belgium, H7 Bulb, 4 LEDs, Photos Included

Question

I warmly welcome. I bought a rectifier in Belgium on a brocade and when I returned home and after connecting it turned out that it does not charge. I tried to connect it under the H7 bulb and nothing, the bulb does not light, only 4 LEDs light up. I disassembled the case and there is no fuse. I...

Krzysztof Kamienski · Answer

Terrifying Chinese trash. Check the polymer fuse (this yellow plate), is its resistance 0? And this ceramic resistor 1?

Wojciech. · Answer

Multimeter in hand and check the voltage at the output of the hits and the bridge.

Krzysztof Kamienski · Answer

For what? The LEDs glow to him Break in either polymer fuse or resistor, but most likely in crocodiles

chudi075 · Answer

With this check I will have to wait until I go to Poland, but thanks for the information, at least I know what to do.

Krzysztof Kamienski · Answer

Twist it together, slide the insulation sleeves off the spring clamps and see what's going on there. This is all you can do on the road.

chudi075 · Answer

I'm green when it comes to electronics etc. The polymer fuse is the yellow plate and the resistor? Added after 45 : Ok, I will.

Krzysztof Kamienski · Answer

White ceramic cube.

chudi075 · Answer

Crocodile clips approx.

grala1 · Answer

This rectifier is probably 4 amps (although I recently saw a 4A rectifier with a 6A fuse) so if there is a 4A polymer fuse and you test it with a 55W light bulb it may not shine because the fuse may work. Test with a smaller light bulb.

Give photos of descriptions from the polymer fuse.

Connect a standard 21 or 5W light bulb here.

If it lights up, connect it here

If it is off then you have a damaged polymer fuse.
If it is lit, connect it as marked here

If it is not lit, the resistor is damaged.
Where is the resistor and where is the fuse here

chudi075 · Answer

Thanks. Today after work I will check the bulb you wrote about if I have one and write what results afterwards

Sniezynka · Answer

If all the LEDs are lit after switching on the power supply and the battery connected, the 1 Ohm 5W resistor is damaged. Only the battery connected to the charger (without mains power) LEDs are off, the charger connected to the mains without battery also.
I've already done that.

chudi075 · Answer

After turning on the power, nothing is lit until you connect the crocodile clips under the bulb or the battery then all of them are lit.

Krzysztof Kamienski · Answer

@ chudi075 Well. Now the bulb in series with the battery. I suspect that despite all this rectifier was working, only a colleague ...... It was enough for a moment to confuse polarities when connecting the battery and the 1? resistor fell. He protects the polymer fuse more than vice versa.

chudi075 · Answer

I bought it at a flea market at risk because it could not be checked and when I returned and connected it did not work. I will replace this resistor and we will see. Can you put some fuse in the input?

12V Charger Not Charging: Rectifier from Belgium, H7 Bulb, 4 LEDs, Photos Included

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