Thomas Ride on Train - System Diagram and Components

Teardown

Teardown

Teardowns provide a look inside a device and should not be used as disassembly instructions.

Member-Contributed Guide

Member-Contributed Guide

An awesome member of our community made this guide. It is not managed by iFixit staff.

Edit Step 1 Thomas Ride on Train - System Diagram and Components  ¶ 

Image 1/1: When power is applied to the charging connector it activates a relay which disconnects the power to the main circuits.

Edit Step 1 Thomas Ride on Train - System Diagram and Components  ¶ 

  • System Components

  • When power is applied to the charging connector it activates a relay which disconnects the power to the main circuits.

  • The main powerswitch is under the large yellow lever and simply applies power from the battery to the control board in the console.

  • A multipole switch is used to reverse the direction of the motor

  • An LED in the console flashes with the sound

  • The sound is provided by a loudspeaker in the base

Edit Step 2  ¶ 

Image 1/2: The charging connector is on the rear of the train between the buffers

Edit Step 2  ¶ 

  • Charging Connector

  • The charging connector is on the rear of the train between the buffers

  • My connector is a "old style" connector which is effectively a phono, the new style is a more conventional power connector

Edit Step 3  ¶ 

Image 1/1:

Edit Step 3  ¶ 

  • Power Switch and Charging Relay Board

Edit Step 4 6v Sealed Lead Acid Battery  ¶ 

Image 1/1: Note the fuse on the positive connector

Edit Step 4 6v Sealed Lead Acid Battery  ¶ 

  • This battery has been replaced, the originals attach via a clip

  • Note the fuse on the positive connector

Edit Step 5 Reversing switch and LED  ¶ 

Image 1/1: Middle position is off, the other two positions are forward and backwards

Edit Step 5 Reversing switch and LED  ¶ 

  • This switch is controlled by the level on the console and switches the polarity of the motor connectors.

  • Middle position is off, the other two positions are forward and backwards

  • If you are replacing the LED don't forget that the polarity of the wires is important

Edit Step 6 Control board  ¶ 

Image 1/1:

Edit Step 6 Control board  ¶ 

  • Has three switches to activate the music and connectors leading off to the motor, speaker, LED and battery

Edit Step 7 Loudspeaker  ¶ 

Image 1/1:

Edit Step 7 Loudspeaker  ¶ 

  • This is a 16ohm speaker

Edit Step 8 Motor  ¶ 

Image 1/1:

Edit Step 8 Motor  ¶ 

  • 6v electric motor with capacitor for noise and spark suppressor wired across the terminals

6 Comments

sound their but it's stoped moving

Leona - Reply

If you've got sound but no movement then the most likely cause is the battery is discharged or defective. If you have a multimeter you could check the voltage on the battery.

If may also be a motor / mechanical issue. With the power disconnected you should be able to rotate the wheels but it won't spin freely as there is a gearbox.

Andy from Workshopshed -

Movement but no sound? Been charged

Shiipwreck Flynn - Reply

That could be a problem with the sound board which lives inside the steering wheel. It's quite a challenge to get to that which is what caused me to write the guide in the first place. I had to clean the switches on that board to get mine to work.

Alternatively could be a loose or broken wire on the speaker which is down in the base, one of the first things you get too when stripping it down.

Andy from Workshopshed -

What do I clean it with? Just polish? Had a look. Wires look fine so im confused lol

Shiipwreck Flynn -

You don't need to clean the speaker, you might need to clean the sound switch contacts though. For that you need to get to the control board. If you can get some contact cleaner that is best or just a cotton bud and a dab of water should also work.

Andy from Workshopshed -