Does everyone get transformer whine with the cheap PSUs you can get on AliExpress etc? I have 6A and 10A versions of these (not this seller, but they are all basically the same) and I get aweful whine with both of them with about 60 WS2818B LEDs. Most annoyingly the whine changes as the colour does and it draws more/less power! I’ve used shorter chains with 3A simple 240v-5v boards and it’s not being an issue. I’m sure that 6A and definitely 10A should be enough current right? Am I right in thinking 0.3W draw per LED max?
I’m wondering if they are all like that or I have managed to get two duds.