RC Diesel ... delving inside....

First attempt to get it running with new batteries in the Transmitter Controller, no go...

Bought a battery charger and charged the loco batteries ... still didn't work...

So desperate measures, time to peek inside, removed the battery pack (which was wrapped round with gaffer tape !), all the other bits were held together by double sided sticky strips.

Checked the Loco batteries ( 8 x 1.2v), removed them from the pack and put them on a charger - one duff battery - so that explained the non-running ??? Nope - I tried a PP3 without success

So I pulled out my old tester and started checking voltages...

I found two broken power wires between the Receiver and the Controller .. fixed these but still no joy.

Hooked up the PP3 directly to the motor input and it moves - so the motor is OK.  Investigation of the switches and tracing wires

• Front switch1 on/off power to motor; 
• Charger socket
• Front switch2 on/off charge
• Rear switch2 on/off sound card - which makes a diesel sound ! so something worked (it has its own battery)
• Rear switch2  on/off lights - which don't work

I searched online and managed to find manuals for the Transmitter/Receiver,  Controller but not the sound card.

Time to RTFM !

At worst I could have a fault in the transmitter, receiver or control card - hmm one option is to replace with new more up-to date and smaller kit.