I am assuming you are using the Lionel CW80 power source. If so, the blinking light might indicate a partial short or a problem with the motor. The reason I believe that is that the CW80 has an internal fuse, which will blow for near shorts/shorts. A stalled motor i.e stuck drive gear, can cause excessive power drain although not enough to blow the internal fuse and also cause the engine not to move. Also, If the engine has the neoprene belt on one of the drive wheels it might have come off and is jamming the running gear or wheel. I believe the Polar Express only has one neoprene belt.
This version does have two neoprene belts on two of the drivers. Make sure they are both seated in the wheel groove. It still does not make sense to see the light blink when only the passenger car is on the track. The DC power pack may be acting on an overload condition in error, in which case it is not the engine or car issue.This version does have two neoprene belts on two of the drivers. Make sure they are both seated in the wheel groove. It still does not make sense to see the light blink when only the passenger car is on the track. The DC power pack may be acting on an overload condition in error, in which case it is not the engine or car issue.
Do you have access to another DC source i.e 6 V battery you can connect to the track to run a quick test? Just make sure you get the polarity correct. If the engine moves, it is then obvious it is the DC power pack.Do you have access to another DC source i.e 6 V battery you can connect to the track to run a quick test? Just make sure you get the polarity correct. If the engine moves, it is then obvious it is the DC power pack.
Answers & Comments
I am assuming you are using the Lionel CW80 power source. If so, the blinking light might indicate a partial short or a problem with the motor. The reason I believe that is that the CW80 has an internal fuse, which will blow for near shorts/shorts. A stalled motor i.e stuck drive gear, can cause excessive power drain although not enough to blow the internal fuse and also cause the engine not to move. Also, If the engine has the neoprene belt on one of the drive wheels it might have come off and is jamming the running gear or wheel. I believe the Polar Express only has one neoprene belt.
This version does have two neoprene belts on two of the drivers. Make sure they are both seated in the wheel groove. It still does not make sense to see the light blink when only the passenger car is on the track. The DC power pack may be acting on an overload condition in error, in which case it is not the engine or car issue.
Do you have access to another DC source i.e 6 V battery you can connect to the track to run a quick test? Just make sure you get the polarity correct. If the engine moves, it is then obvious it is the DC power pack.