I couldn't decide where to put this, so mods please move it if need be.
I have the D class and have fitted it with a Zimo sound decoder.Just lately the sound cuts out after a second or two of turning it on. I've found that if I waggle (for want of a better word) the loco and tender, then the sound comes on. In reverse it stays on but forwards it cuts out. I'm sure it must be the connection or wiring, but wondered if anyone else has had this problem and how they fixed it. I have cleaned the connection surfaces, top and bottom of the plug and socket, but this made no difference. The loco doesn't stop, only the sound.