Hello I kindly ask for help in repairing the ROYA LUX Infrared Sensor RLX-1201 motion sensor. I don't have a scheme of operation, small components, maybe I will find here kind and professional help in repairing it, for which I would like to thank you right away. The lamp manufacturer does not accept sensors for repair, especially after the lamp warranty has expired. The problem concerns the continuous lighting of the lamp, and the sensor not responding to light or time regulation. What could be the reason for this problem and what components should be replaced, possibly how and what to check in this motion sensor? Tips are best in terms of pathology, I'm only fundamentally oriented in electronics, and I really care for the sensor to work again. I attach photos of the sensor (one of the photos shows the power supply for this sensor and lamp). Please help.
E8600, thank you for the tip. Can I check these burn time regulators and light sensor without desoldering, or is it better to desolder them to see if they react to changes during their adjustment in plus and minus?
I checked and both potentiometers react the same to adjustments. In the extreme i.e. upper and lower position there are other values, of which in the lower zero. What could be checked or replaced next? Please help.
- Searching for cold solders (improve all suspicious connections); - Place a functioning / checked electrolytic capacitor behind the rectifier bridge; - Under this capacitor, there is probably a fuse resistor 0 (a transition should be functional); Having everything on the table checks everything in turn, ending with checking the control systems, comparing the input and output voltages with the catalog note.
I remind the system is powered by 250 V, so without proper knowledge / practice and without taking precautions it is better to refrain from repairs for your own safety.
OK thank you for the information. No pattern, I can't trace at least anywhere. Powered by led power supply with reduction to 40-80V DC. quotation: "Under this capacitor there is probably a fuse resistor number 0 (a transition should be functional);" I understand that this is black with a white stripe. Do I have to desolder it to check it and should there be a signal of a return trip or only one on the diode measurement?
Really weird stuff. Resistor 0 is functional and there is a double-sided transition, I also checked the MB6S rectifier bridge and it is functional, in addition so. cold solders are missing. Is it possible and how would it be possible that the only electrolytic capacitor in this sensor has such an effect that the sensor does not turn on? Either way, I need to order a new polarized electrolytic capacitor when it arrives, I will swap it - though it doesn't look damaged in any way.
I am asking for further hints and help, what could be checked / replaced by this sensor until then, and it may be faulty, preferably from my own experience with motion sensors.
E8600, however, you are right. The power supply of this system is 240V AC, only after leaving this system goes to a 40-80V DC power supply. Capacitor 47uF / 35V ordered, but it doesn't really look like something is wrong with it. Most likely, the cause of the fault must be somewhere else, maybe someone will tell you what else could be checked here?