LGB Mogul sound card?

[Budd]

I have just bought a second hand Mogul, it has a sound card fitted which appears to be an LGB original, it works when I switch it on but the whistle comes on and stays on all by itself!!!
I have disconnected all the track pick ups to convert to battery only op's, the tender had a strange looking spring/contact to activate the whistle which I have disconnected but the whistle still comes on. I will eventually connect the whistle to be R/C activated rather than track side switch but for now I just want to turn the damn thing off, I am presuming the switch is (or was) a make-to-activate switch rather than a break-to-activate switch, anybody got any ideas?

Wayne

 

[Tony]

hi Budd
dont know the reason maybe damp but mine did the same, well it stopped chuffing and would only whistle all the time it a sort of annoying Ghostbusters ambulance sort of way.
i took the thing apart and found it had 2 read switchs one beside one wheel that activated by a magnet on a wheel for the chuff as the wheel went round and another on the floor for the whistle when it went over a magnet in the track
apart from some signs of corrosion on a resistor on the circuit board i could find anything else wrong so just took it out
Sorry cant be more help
Tony

 

[Budd]

I made a bit of progress last night, I pulled the tender top of to expose the sound board, it is a big board with no apparent LGB markings or part numbers but has got 2CC written (actually etched) on it, not being electronically minded in any way, it was all double dutch so my first experiment was to twist the 2 wires that went to the funny switch/trigger together----and the whistle stopped? Excellent.
The sound isn't all that bad, it has chuffs at 2 per wheel revolution which I presume would be correct but no other sounds, certainly not as good as my mates Accucraft locos but it will do for now, it has trimpots which may adjust something but I haven't had a chance to find out what!, I will upgrade to something better one day and reconnect the whistle when I fit the R/C to it, I may in the interum fit a reed switch and activate the whistle with the magnetic wand which I carry around to work my couplers with anyway, now I have to find a normally closed reed switch?
Model railroading is fun.

Wayne

 

[minimans]

This sounds like the old Starr Tek sound board. is the contact under the tender like a spring hanging down inside a loop? The trim pots will be to adjust the volume and chuff rate. these weren't bad at the time they came out but are a bit basic these days....................

 

[Budd]

This sounds like the old Starr Tek sound board. is the contact under the tender like a spring hanging down inside a loop? The trim pots will be to adjust the volume and chuff rate. these weren't bad at the time they came out but are a bit basic these days....................

That is the one, it is basic but it will do for now, the kids will love it regardless.
You say adjust the chuff rate, does that mean I can adjust for more chuffs per revolution? I reckon that is what it needs to make it sound busier at slow speeds.


Wayne