Hmm, should be ok-ish.
Is that cool accessible?
So you can measure the voltage across it when powered on?
That way you would know if there is a real current flowing, or the voltage is already low when it arrives.
Is it possible to trace the voltage from where it is coming from to the C-L-C combination?
I mean, maybe there is a broken wire or dodgy connection before it gets to the C-L-C filter?