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You guys know everything I've decided so this is probably a dumb question.  I am the benefactor of having received a used Mel's Diner and Sinclair Gas Station from MTH.  Both are in very good condition and both have somehow lost the switch to activate them.  I am guessing I need a normally open momentary switch but I don't know if I am correct and I don't know what part number from any of the many available out there I should get.  Can someone point to to something?  Thanks in advance.

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I also have Mel’s diner.  It is a great accessory and all of my guests love it.

 

Does anyone have any ideas to control the volume?  When you push the button, Mel’s is louder than anything else in the room.  Also, when you have guests and they keep pushing the button your will want to tear you hair out (if you have any left) after listening to the same song over and over.

I had the same problem, Following Dale Manequan's advice, I installed a 25-Ohm 3-Watt Rheostat Radio Shack Model: 271-265 | Catalog #: 271-265.


The shaft of the rheostat sticks up through the roof, and could be disguised as a chimney. It allows me to vary the volume. Turned on all the way, it decreases the volume by about 50%. 

 

There is a forum thread on this.

Here is a paste from my blog. This circuit made with common components will activate the gas station up to every 8 minutes

 

 

 

 

The following is a repeat cycle timer for accessories activated by momentary pushbutton operation. MTH Sinclair gas station,firehouse,car wash,Mels diner,and lionel PW arrival board are some. The unused NO contacts of the relay are put in parallel with the pushbutton circuit of the accessory. Power is always applied to the black wires (AC in). The timer circuit (green wire- ) goes through a set of NC contacts on the relay. After the set time the relay energizes. The timer circuit is then broken and the relay closes,renewing the cycle. A 1000uf 35 volt capacitor across the relay coil (IN PROPER POLARITY) stores energy and hold the relay open momentarily allowing enough time to reset the timer and give sufficient pushbutton duration to start the accessory. So if hooked to one of the accessories mentioned such as the gas station and the timer was set at say 5 minutes it would cycle every 5 minutes just as if you were there pushing the button.




 


 

This and More circuits using the Mars timer his here and is a bit more legible

 

http://www.jcstudiosinc.com/Bl...1&categoryId=426

Last edited by Dale H
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