Anybody have a circuit diagram and/or repair tips for a Lionel 8142-T35 sound board (1970's sound of steam)?
I have one that just failed. It was working fine until I reassembled the tender.
Now it only puts out a buzzing sound that sounds like A.C. hum. When power is removed, I can hear the steam sound decaying.
I don't have the electronics background of some folks here, but I am suspicious of the orange capacitors. One of them has a whitish, waxy substance on the outside. Also, I straightened a bent over transistor.
I found a couple of bad solder joints on the underside of the board, don't see anything else wrong.
