Need help on an electrical circuit anyone here can help?

Thread Starter

lkl008

Joined Oct 16, 2023
2
So I've been using this 4 way remote switch, to control the lighting of my room i had it fitted in the circuit board, and it stopped working suddenly i checked by opening it up and the capacitor seems to be heating way too much, changed that with a lying around capacitor of the same value and it started making clicking sound continuously and the new capacitor still got heated as well, there are 4 relays switched them thinking that might solve the issue but it still didn't, Any help or ideas? can provide pictures of the circuit.
 

Thread Starter

lkl008

Joined Oct 16, 2023
2
HERE IS THE CIRCUIT,
THE red goes in live the blacks go in neutral of the switches of appliances, and the colorful ones are for 4 different appliances that can switch on and off with the remote controller,
whenever the button is pressed there is a significant click sound which indicates the relay/capacitor (i have no knowledge on this) working but the capacitor attached was getting super heated and suddenly it stopped working all together, i switched the capacitor with another one and it started making continuous clicking sound without even pressing any button on the remote.
 

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Dodgydave

Joined Jun 22, 2012
11,239
That's a transformerless supply, it uses a Capacitor( in brown )to reduce the mains input down to the bridge rectifier, check the bridge rectifier for shorts, and it looks like a 680 ohms resistor is broken or is it just a scratch?
IMG_20231016_114125.jpg
 
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