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I stopped by for a visit with Marty and Dotty today and brought one of my engines with me, an MTH PS2 Dreyfuss Hudson. I've been having issues with poor track signal with it on my layout, and asked Marty if I could try it on his layout to see if there was any difference. As I'm taking it out of the box, I happen to mention that one of the smoke unit heat elements had gone bad, and that I had planned to replace it but hadn't gotten to it yet. He said, "stop right there, don't put it on the track until it's fixed." He then took it into his shop, found the right parts to fix it, and in a short time it was good to go with new elements, wick, and pcb.

He explained to me that running it with a damaged heat element could very easily have ruined the circuit board, and that I was very lucky nothing happened. I had no idea that I could've fried the electronics,  which would've been a very expensive lesson. Since I still have the DCS training wheels on, I always do my best to absorb everything Marty tells me. 

So, thanks Marty, for the help today and for going the extra mile.  All I wanted to do was test the engine on your layout, but you went out of your way to help me as soon as you knew there was a problem. And, thanks to both you and Dotty for your hospitality. Visits to your home and layout are always a treat and I always leave having learned several new things about our hobby. I only hope someday I can return the favor. 

John

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BlueComet400 posted:

He explained to me that running it with a damaged heat element could very easily have ruined the circuit board, and that I was very lucky nothing happened. I had no idea that I could've fried the electronics,  which would've been a very expensive lesson. Since I still have the DCS training wheels on, I always do my best to absorb everything Marty tells me. 

 

John

very interesting comment.

just another thing our members need to be aware of!!

bigdodgetrain posted:
BlueComet400 posted:

He explained to me that running it with a damaged heat element could very easily have ruined the circuit board, and that I was very lucky nothing happened. I had no idea that I could've fried the electronics,  which would've been a very expensive lesson. Since I still have the DCS training wheels on, I always do my best to absorb everything Marty tells me. 

 

John

very interesting comment.

just another thing our members need to be aware of!!

Thanks to Marty!!  Yep, I am in that same boat with the Big Boy; I burnt out the heating element on the front stack and am rebuilding the smoke unit; I will find out when I am done if it took the RCMC with it.

Guys, one pointer that you want to keep in mind when working on Lionel or MTH smoke units.   Both Lionel and MTH have many smoke units with a metal smoke reserviors  where the heaters and wicking reside.   Before putting the PCB with the heaters or heater  back inside, be sure the heater is centered so it will sit as close as possible in the smoke reservior.   Doing this has nothing to do with smoke output.  What you do not want is the heater to touch the side of the reservior and ending up doing damage when power is applied..  

Here is what I always do.  Take your continuity meter and with one probe hit the heater pad or screw on top of the PCB.   Take the other probe and hit the reservior and hope you see no continuity.  If you have no continuity, you did the job right and are good to go.  If you see continuity, open the unit up again and re position the heaters and repeat the step until you see no continuity.

Today, many of the smoke reserviors are plastic.  That makes life easy.   Lionel is always a bit easier to do with the single heater.  You have all read some of the great info on updating smoke units by GRJ and Alex.   Even with modifications to the smoke unit, always make sure the heater does not say hello to the metal reservior.

Rick, you may be lucky.  The RCMC is tough.  I am a very big fan of the RCMC.

Last edited by Marty Fitzhenry

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