Why does the desk lamp power supply squeak?
The desk lamp, turn on the power outlet, begins to peep the power supply, with ultrasound, after 5 minutes the lamp goes out. You get it and put it back in, the unit is on again, after 5 minutes it goes out again. What is the problem? In the block?
It depends on which lamp. There may be a problem in the light source. Maybe in the power supply. Your message is not particularly clear. I can only advise you to see the quality of all the connections, if there is any bad contact somewhere. The power supply can squeak even if the filter input capacitor fails.
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