Back story:

For the past year I have a set of LEDs in my kitchen, and recently they started turning off, changing brightness, switching to different modes all by themselves. I thought maybe the controller went bad and was failing, so I replaced it a couple of weeks ago. Yesterday they started exhibiting similar behaviors again.

So I’m wondering now if the power supply is failing and it’s causing the controller to do weird things.

I grabbed my multimeter to see what kind of voltage the power supply is putting out, and it’s giving me 52V. The power supply is supposed to give 24V output (see screenshot below), so I’m confused and was hoping someone could help me understand why I’m getting over 2x the voltage?

I do apologize if this is not the right place. I saw an askelectronics community, but their rules say no electrical, and at this juncture I believe my question is electrical. If there is a better place for this kind of question, I would appreciate a pointer to the better place.

Edit:

I am a dummy. Less so as of right now, but yeah, it was user error. So I learned today that the multimeter can read both DC and AC voltages, and my power supply is 24V in DC, while I was reading it in AC. ‍️ Once I switched to using DC, the power supply read 24V (in multiple outlets).

What is the voltage going into the power supply? Should be 120v but the power supply works on percentage so if you have a short and putting 240v into it...