Only 3 of our low voltage switches are turning lights off & on. The remainder of switches will not work. No buzz when you push them. All lights have their own relay at the specific overhead light. The one transformer we are aware of is working. This started with leaving 0 lights on with the exception of 2 outside lights. Came home & could turn one outside light on & off, but the other was stuck on. Except for 2 other low voltage switches inside the rest won't go on or off. All plugs work. Thank you.

If it is the type that a momentary press on turns the lights on and a momentary press of off turns off. If the one I'm thinking has 2 coils per relay, energized coil pulls to off or on.
The common, on relay gets power from the transformer, other end of transformer hooks to common of all on/off switches, then you have 2 wires that go from each switch to 2 terminals on relay, with a meter, you can test at panel, or jump at panel to see that relay is good and problem is from switch to relay.
This type has no dimming.
Similar or different?