Can a faulty dimmer lead to driver failure?

MedicinalMyA$$

Well-Known Member
I have a 600W DIY fixture consisting of four sections each powered by identical 150W drivers with individual 1-10V dimmers on leads. Multiple driver failures wherever a particular dimmer was used. Even on separate fixtures with different drivers. Four dead drivers with the dimmer the common denominator.

I didn't know bad dimmers could cause driver failure but it seems like this is the case. Anyone have any insight into this?
 
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sfw1960

Well-Known Member
I only use the passive potentiometers on my fixtures.
What brand (s) of equipment?
I've heard of the 600 meanwells puking under warranty but IDK about the 0-10v dimming, but am doubtful the dimmer took em out.
Having multiple 150’s yak indeed seems more than coincidence.
NOT good - it does seem to point to it.
The decent drivers have so much protection circuitry - OLP, OVP, OCP and you should expect the dimmer circuit is protected well too. Head scratcher!
I'd do a search for that particular dimmer and see if you're not alone...
If you don't use em, lose em.
I do use my dimmers and the pots are a lot less money (cheap bastard I am...) and readily available for replacement should one fail.
They either get "gritty" so fine adjustment isn't possible, a short gives you either full brightness or full dimming but no way to destroy the internal circuitry.
I'm interested in what you find out!
 

1212ham

Well-Known Member
Weird. Only thing I can think of, that one dimmer outputs more than 10v and smokes the drivers dimming circuit.
 
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