31A Driver Posted June 26, 2010 Share Posted June 26, 2010 Hi all, just equiped my Heljan 58 with sound and noticed the following lighting irregularity. Whether function 0 is selected or not, the lighting comes on. Now this is the really weird bit, it only illuminates on even numbered speed steps, ie, 2, 4, 6, etc and not on odd numbered speed steps. I have tried putting a different decoder in and it is still the same, which suggests a problem with the circuit board itself. For the time being I have disconnected the lighting entirely, until I have time to find the cure or fit replacement lighting. Any ideas???? Andy Link to post Share on other sites More sharing options...
deltic79 Posted June 26, 2010 Share Posted June 26, 2010 There was a problem with the lighting circuit on the first batch of Heljan 58s (I believe the later batch had this corrected). There is a fix you can make yourself but I can't find the link to it at the moment (think its on the old forum). Will have a look for you (that's assuming your model is from the first batch). Link to post Share on other sites More sharing options...
Deltic Man Posted June 26, 2010 Share Posted June 26, 2010 I have heard that the 8 pins on the decoder sometimes touch the circuit board underneath when plugged and affect the lights so you may want to adjust it maybe? Link to post Share on other sites More sharing options...
deltic79 Posted June 26, 2010 Share Posted June 26, 2010 Found the link I was looking for here. Seems all that is required is the removal of the capacitors. Link to post Share on other sites More sharing options...
31A Driver Posted June 27, 2010 Author Share Posted June 27, 2010 Thanks guys, will have a look at it tonight. Not happy with the speaker set up, so I have to have it apart anyway Andy Link to post Share on other sites More sharing options...
31A Driver Posted June 27, 2010 Author Share Posted June 27, 2010 Hi all, turns out I had already removed the capacitors. I have decided to bite the bullet, and I have ordered a new PCB from Howes. Thanks for your help Link to post Share on other sites More sharing options...
SRman Posted June 28, 2010 Share Posted June 28, 2010 What number of speed steps are you using? I have heard of anomalies when the decoder is set to 14 speed steps. Change it to 28/128 and see what happens then. Link to post Share on other sites More sharing options...
RMweb Gold Dagworth Posted June 28, 2010 RMweb Gold Share Posted June 28, 2010 Your problem doesn't need a new board, it just needs Cv29 setting correctly. at the moment you have it set to run in 14 speed step mode. See http://www.rmweb.co.uk/community/index.php/topic/221-cv29-demystified/ Andi Link to post Share on other sites More sharing options...
31A Driver Posted June 28, 2010 Author Share Posted June 28, 2010 Thanks Andi and SrMan. The lights are now functioning correctly. 1 more question, how vital is the resistor which is in the motor circuit? As last night in a fit of frustration I removed it. Can I get away with just putting in a wire link, or should I replace the resistor? Thanks, Andy Link to post Share on other sites More sharing options...
RMweb Gold Dagworth Posted June 28, 2010 RMweb Gold Share Posted June 28, 2010 Thanks Andi and SrMan. The lights are now functioning correctly. 1 more question, how vital is the resistor which is in the motor circuit? As last night in a fit of frustration I removed it. Can I get away with just putting in a wire link, or should I replace the resistor? Thanks, Andy The two small green components are smoothing chokes to help with noise suppression on DC operation. Both can be replaced with wire links. Andi Link to post Share on other sites More sharing options...
31A Driver Posted June 28, 2010 Author Share Posted June 28, 2010 Thanks Andi, thats saved me 9 quid on a new PCB! Andy Link to post Share on other sites More sharing options...
english electric Posted November 12, 2010 Share Posted November 12, 2010 does any one know were i can get hold of a lighting kit ? please what i want to do is use the existing wiring and just tap the leds onto a lighting board, im not fussed about day and night n independant tail lamps all i want to to do is 2 red one end and 2 yellow n white at the other and vice versa, hopefully someone can point me in the right direction. i contacted express models and they have a back log due to illness thanks in advance Link to post Share on other sites More sharing options...
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