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Posted on Jan 02, 2017
I have had the same problem with my polar express, which i just bought recently. Having to send it to the USA from the UK would be very expensive so i decided to open it up myself. The tamper proof screws were a bit of a problem getting into it. I ground down an old screw driver into the triangle shape to undo them. I then replaced them with self taping srews the same size.
The Problem I found was simple, there is an internal (250V, 8Amp) fuse soldered onto the red wire on the secondary winding of the transformer. The red wire going from the transformer to the PCB, the fuse has black heatshrink over it.
There is no room inside the housing of the controller to fit a fuse holder. I fitted a box on the side of it with a panel mount fuse holder. drilled a hole through the housing, fitted longer red wires, so they could go through to the terminations on the back of the fuse holder.
At least now I can change it simply if it blows again.
hope this is of help to you.
Posted on Dec 08, 2008
No doubt the transistor in the motor controller inside the engine is shorted TIP31C Q6 If you have the skills you can repair the unit. Parts are cheap, like 50 cents. Expense is shipping. Have repaired at least one that had the probblem you describe
Posted on Dec 23, 2009
My son just got this train and we are having the same problem. Taking the last car off solved the problem for us. I think it has something to do with accessories and the transformer voltage output (See page 14 and 15 of the instructions).
I have still not determined why it won't run with the final car but am assuming it has something to do with the lights on the cars pulling too many amps and not enough left to run the train. I will let you know if I find a solution. If anyone else knows how to solve the issue, any assistance would be greatly appreciated.
Posted on Dec 25, 2010
Replace all the batteries, then keep the remote close to the
train. if it's too far away, it will shut down.
Posted on Mar 02, 2013
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73-1960-250 in to search. This is a PDF file for the Polar Express which was released by Lionel in 5/05. You can also go directly to: http://www.lionel.com/media/servicedocuments/73-1960-250.pdf
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