Hi, Any idea's, 1 doorbell, 4 chimes, 2 transformers, 1 of the chimes works from 1 transformer (now not working) & the other 3 works off another transformer. So one of the chimes have stopped working. I checked the voltage on the secondary side of transformer & this was o.k & voltage at the chime was o.k. So I am presuming the chime is broken. I didn't think you could run bell transformers in parallel.