I have two under counter lights in my kitchen which stopped working at the same time. I assumed some kind of fuse needed changing, and on opening the little box connecting them to the mains I found the following.
I presume this is where my problem is, but what is it? And what do I ask for to get a new one that works?
Best Answer
Of course it is impossible to tell for sure without looking at the circuit in more detail but it looks like a 120V AC to low voltage DC power supply. A way to troubleshoot it would be the following:
As with any high voltage board be very careful when troubleshooting a powered board!
PS: I believe Monso is wrong here - the voltages after step down transformer are typically 5-24 V which is not enough to cause harm (after the board is powered down).