Daz1966 Posted February 17, 2017 Share Posted February 17, 2017 Hi all, I was running my TTS Tornado recently when out of the blue it derailed on a point, this triggered the short circuit system within my Railmaster, After putting the loco back on the tracks the short circuit warning kept reappearing, On further investigation it seems the TTS decoder is at fault, With the decoder unplugged from its socket within the tender no short circuit exists as soon as this is reconnected short circuit is back. On the programming line I thought I'd try first reading the address which returned 255 (loco was programmed as 002). I then tried resetting using CV8 but this has had no effect. I can confirm the 8 pin plug is not making contact with the chassis so the short isnt coming from there. Do I need a replacement decoder or can it be saved ? best regards Daz Link to comment Share on other sites More sharing options...
Yelrow Posted February 17, 2017 Share Posted February 17, 2017 Daz. hi, Firstly, how old is loco. Is it still under warranty. When one of mine failed i returned it to Hornby, who sorted it, FOC. john Link to comment Share on other sites More sharing options...
Daz1966 Posted February 17, 2017 Author Share Posted February 17, 2017 Hi John,its sadly 14 months old so no longer covered by a warrenty, thanks for the thought though. Link to comment Share on other sites More sharing options...
Rog RJ Posted February 17, 2017 Share Posted February 17, 2017 If you can, try the TTS decoder in a different model. If it works in a different model it would show that the problem is with the wiring, or something else, in the Tornado. Link to comment Share on other sites More sharing options...
96RAF Posted February 17, 2017 Share Posted February 17, 2017 Unless you have a blanking plug to insert in lieu of the TTS decoder you are unlikely to be able to show the short if it is a loco fault as you need the plug to complete the pickup to motor circuits. If you dont have a blanking plug just use a pair of wires to connect the corner pins on each short side of the socket i.e. Connect socket Pin 1 to 8 and pin 4 to 5. - essentially one motor connection to the left track pickups and the other motor connection to right track pickups. Now see if the short is still there, but if all is well do not leave the loco on a DCC track for long or it could be damaged.Rob Link to comment Share on other sites More sharing options...
Daz1966 Posted February 17, 2017 Author Share Posted February 17, 2017 Good shout Rob, I never considered that without the blanking plug I wasnt testing the chassis for the short, I'll do that tonight, would love to find it is something I can solve ratjher that having to purchase a new TTs decoder. Link to comment Share on other sites More sharing options...
2e0dtoeric Posted February 17, 2017 Share Posted February 17, 2017 Check for something silly, such as a stray track pin or bit of metal debris that has gone between a wheel and the chassis. Then look for a chafed or pinched wire. Link to comment Share on other sites More sharing options...
96RAF Posted February 17, 2017 Share Posted February 17, 2017 ...look for a chafed or pinched wire... I have found several locos with this fault, some even showing bare wire. Well worth a close look. Link to comment Share on other sites More sharing options...
Daz1966 Posted February 20, 2017 Author Share Posted February 20, 2017 Bad news, The loco is fine, I tried it with a blanking plug and no short circuit exists, I also tried the decoder in another loco and the short moved with it, I'm really disappointed that the TTS decoder has died because of a derailment. How do I get a replacement ? best regards Daz Link to comment Share on other sites More sharing options...
Yelrow Posted February 20, 2017 Share Posted February 20, 2017 Daz, if twas mine, i would be speaking to Mark Lodge, customer services manager, at Hornby. I understand, its just out of warranty, and perhaps, so will he. Certainly, the only thing to lose, is the cost of the phone call. john Link to comment Share on other sites More sharing options...
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