Hi, I have issue with LED light for car. There are 4 white LEDs and MC34063AL circuit. Problem is, it's not working. It's rated 12V/4.8W. If i put voltage of 4V on input, it draws about 700 mA, and the IC package becomes quite hot. Also capacitors and inductors are quite warm. LED diodes are all off (they are OK, I checked them with low voltage directly on their terminals). I have only multimeter, no scope. Any ideas? Thanks.
I attached the image of the PCB.