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  I've repaired many  many engine's in my time, but I think this one takes the prize!!! This is a Lionel TMCC ESE steam engine, item 6-38000. When i took it out of the box it had a bad burn smell, I was so curious I had to open it up immediately. Here's what I found, fried to a crisp.

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I just spoke to Alex and yes....that is my engine!  I was running it at the club on Wednesday testing it out before our show this Sunday.  I hadn't run in in about a year.  It was running for about an hour at 18 volts from a Z4000 when I heard a loud crack/snap sound.  Almost sounded like a circuit breaker tripping.  The sound and smoke stopped but it continued to run.  I tried resetting it through the CAB-2 but no response.   I then noticed it was starting to smell and pulled it from the track.  In talking it out with Alex I realized it had been smoking as well as I've ever seen a Lionel engine smoke.  In retrospect that was probably an indicator that the voltage regulation was going south.   

Well, it's in good hands now and will be ready to run in due time.

 

Last edited by Chris Lord

Bring on the new Legacy ESE.

 

Chris, BTW that engine makes a great DCS conversion.  I have a few TMCC engines.  If they set for a long time I always reprogram the R2LC with the AUX code before using them.  Nothing is documented on that.  TMCC is an older system and like ourselves, time does funny things.  Have you checked into Ben leaving a beer can on the track??  I have never been a fan of that regulator and have replaced many.  Chris, it happens, nothing anyone did.  Alex should be able to put it back together.  

 

 

Last edited by Marty Fitzhenry
Marty Fitzhenry posted:

Bring on the new Legacy ESE.

 

Chris, BTW that engine makes a great DCS conversion.  I have a few TMCC engines.  If they set for a long time I always reprogram the R2LC with the AUX code before using them.  Nothing is documented on that.  TMCC is an older system and like ourselves, time does funny things.  Have you checked into Ben leaving a beer can on the track??  I have never been a fan of that regulator and have replaced many.  Chris, it happens, nothing anyone did.  Alex should be able to put it back together.  

 

 

No beer can on the track.  To be honest, Ben's a bottle guy.  There were however a couple of DCS engines running.  I suspecting they were the culprit!  

Marty Fitzhenry posted:

Bring on the new Legacy ESE.

 

Chris, BTW that engine makes a great DCS conversion.  I have a few TMCC engines.  If they set for a long time I always reprogram the R2LC with the AUX code before using them.  Nothing is documented on that.  TMCC is an older system and like ourselves, time does funny things.  Have you checked into Ben leaving a beer can on the track??  I have never been a fan of that regulator and have replaced many.  Chris, it happens, nothing anyone did.  Alex should be able to put it back together.  

 

 

Hi Marty, i would think  Ben might have left a beer on the track, LOL. Marty you just taught me something,never thought of reprogramming the engine since it was sitting so long. This just might be the issue. I'm not a fan either of this voltage regulator, it would be much better to bypass all of those smoke electronics and install a 27 OHM unit with a 20 OHM resistor and GRJ's super chuffer.

Alex

I will start getting into this engine this coming week. I will let you all know my findings after some troubleshooting this. But in all honesty with all these boards so burnt and fried, there's really nothing to troubleshoot. It's going to be a case of replacing all boards and some new wiring. I will take a look around and anyway.  Stay tuned !!!

 

Alex

Take a regulator and cover it in heatshrink and don't allow natural circulation or frame heatsink probably doesn't work in that regulators favor. An improvement might be to heat sink it.

The other issue is if the element input side was shorting to the smoke unit case causing a 0 ohm short.  That would overload that regulator and if it fails shorted that would cause the issue.  Though you would think a breaker would open somewhere.  I have had Lionel engines where the element short to housing was the issue.  G 

These types of catastrophic failures should not happen but the engine could be saved by gutting and replacing with an electronic e unit, horn/sound board and simple smoke generator. That's probably the most economical way to fix it.  If you want a replacement TMCC board, Jim Policastro had a bunch of them that he was selling at York and may still have a few.

This, sadly, isn't that uncommon.  I've seen a number of smoke regulators fail, and several of them have done exactly what you see.  The triac shorts, and puts full 18 volts on the 6 or 8 ohm resistor in the smoke unit.  The result is 40-50 watts of power in the smoke unit instead of the design of 5-7 watts.  The result is predictable.  New smoke regulator, new smoke PCB, resistor, and wick.  On one I even had to replace one of the connectors that plug into the smoke unit as it was melted as well.

Years ago I purchased a new , in the box, Lionel  JLC engine to complete that set (circa 1985).  Just after commenting "what a great smoker it was"  I had an honest to goodness "stack fire" with a 4-5 inch flame!   Fortunately, there were no flammables such as paper tunnels or dried out Christmas trees, and I was there to deal with this conflagration.  At that time I did the Lionel repairs for the store where I acquired this engine.  This one went back to Fundimentions and was hopefully placed on the scrap line. Happy Holiudays to All !  

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