Hopefully the right place.

Bought a light that has two light circuits: one for the center section, the other for the outer ring.

The inner section can do 3 colors (yellow, white, bright white - not sure the actual temperature).
Outer ring can do 2 colors - blue and yellow.

Both controlled with their own switch. 110v

The issue is that each circuit cycles through the colors of you turn power on - off - on within 7 seconds. I would like to make the colors for both be yellow permanently.
Better would be making it on-off-on-off-on-off or some less likely to happy sequence but that's not really necessary. Problem being that it's too easy for the light temp to get changed with people walking in and out of the room right after each other.

Not knowing much about this type of circuitry, does anything stand out that would be a simple solution to this?
For the outer ring I could do something with the red/white/yellow cable but would prefer the same solution for both circuits for consistency.

 

To be honest I think you'd be better off shopping for a bulb that does what you want and repurposing this one. What you want may be possible to configure, but it won't be simple to figure out how to do that. Worse, it's possible that the design requires an off time for cooling various components and that continuous "on" time would stress something. I'm not saying that's likely, just a potential risk if messing with something you don't have details on.

 

Thanks for the reply. I get your point entirely but I didn't explain the situation well.

I would also be more than happy to get a different one but this one is a bathroom fan combo so already installed and sealed the base before I realized the light worked this way. I definitely can swap it out but would like to explore options.


The timer isn't a cool down period or anything like that. They are just using the 7s on off on as an indicator that the user wants the light color temp to change. To me that is way too long of a window for that. It may be rare for that to happen often in normal usage but not impossible.
So I am looking for a way to either swap out some capacitor that would take that down to 1s or removing it completely so I only have one color.

Let me know if that doesn't make sense. Most lights have a switch to change colors so didn't expect this to do it based on power cycling.

 

As I look at the drawings I see some are marked "Y", some are are marked "W" on the inner group and some are marked "R" on the outer ring. One choice could be to simply cut the trace to the "R" colored LEDs on the outer ring and see what that leaves you. One cut should disable the whole colored string, if they are all in series. Simple enough to try, and if it does not work out, simple enough to repair.

 

Exactly. The R is actually a B (hard to tell in the photos) and while I haven't hooked it up to power since I took the lens off, safe to assume the B LEDs are for the Blue light (I guess that's a normal color for night lights?) whereas the Y are for when it's in yellow temp for the outer ring. For that one I could definitely modify the jumper cable.

Go figure that's the least important one as right now it's not even hooked to a wall switch since we don't need a night light.

It's the inner set that's all on big board that I am hoping to modify.

It just has W and Y leds so maybe half/half for the mid-color temp? I can test that.

I am curious how the timer/memory functionality even works. Is that something controlled with capacitors or is there some kind of microcontroller handling that?

 

It looks to me like there are two capacitors with values in the tens of microfarads, and several much smaller ones. The big ones are probably serving to filter the power or stabilize some functions. Removing a part that small is asking to lose it,so it may be better to put anoyer one across it, connecting to the same copper area.

 

Bypass or disable the timer. Might need to cut a trace or tweak some components.

If you're fixing multiple lights, set japanese light names for your LEDs to better remember them.

 

Bypass or disable the timer. Might need to cut a trace or tweak some components.

Well, yeah....

 

I see that the circuit is actually quite complex, as well as spread out on the PCB. So any change will require tracing out the circuit.

 

Thanks. I came to the same conclusion and have just left it alone for now. Remodeling the bathroom so will go with a different light after that's done anyways