On Thu, 19 Jun 2014 10:30:20 -0700 (PDT), trader_4
wrote:



There are two kinds lighted button. One with LED, one with real small

light bulb. Latter one will work OK.

Don;t you really mean the LED type will work? That's what I would
think. Bulb type would draw more current, possibly ringing bell.
LED draws very little current.

That sounds like a good argument, but try this. Lighted buttons used to
work. They were all real small light bulbs. Something changed. Ah,
the new design, used on some, uses an LED. Those are the one the
doorbells weren't designed for.