Merkurius Posted October 11, 2013 I bought an old 7860 today. The remote control was broken, but I wanted to test the 2x3 lightbrick. I connected it directly to the transformer but only the green light was lit even if I twisted the cables. Is the lightbrick broken or is it impossible to test it without the remote control? Share this post Link to post Share on other sites
Heppeng Posted October 12, 2013 Firstly, make sure that you are using DC, not the AC output of your transformer. Then make sure that when testing that you reverse the connections correctly. The only way I can think that you would get the results exactly as you have described is that 1. you are testing on AC, and 2, the red led is bust. If you were testing on AC and the red was good, you would have the appearance of both red and green simultaneously - perhaps with a perceptible flicker due to the AC. If you were correctly testing on DC a green illumination on both polarities is impossible. Share this post Link to post Share on other sites
Merkurius Posted October 12, 2013 Hi and thanks. I am now testing the light with the12v= outlet, the one to use with remote controls. Only the green light work. I am returning the connector and nothing lits up. Is the red lamp dead then? Share this post Link to post Share on other sites
Heppeng Posted October 12, 2013 Yes unfortunately. However with the high value of these it is worth repairing, a replacement LED is just pennies, and it should be a quite straightforward soldering job once you get it open. You can even completely rebuild the insides if required, see here- http://www.eurobricks.com/forum/index.php?showtopic=78487&hl=circuit Share this post Link to post Share on other sites
JopieK Posted October 13, 2013 @Heppeng: I totally agree, prying it open without leaving too many marks is the most difficult thing, soldering the LED is very simple (but make sure you have a good soldering iron, not one for plumbers, but one for electronics). B.t.w. Maybe the LED is will still work but there is even a loose connection! Share this post Link to post Share on other sites
skywallker Posted October 22, 2013 hello, this is my first post. please help me with my problem. My signal set worked perfectly yesterday, and today, I have noticed that the switch is not giving a power to the rail, when the green light is lightning. I TESTED THE CONNECTIONS FROM THE END - FROM THE POWER RAIL, THROUGH THE WIRES AND CONNECTIONS AND IT TURNS OUT THAT THE SIGNAL DOES NOT GO OUT FROM THE SWITCH :( CAN I DISMOUNT THE SWITCH CASE WITHOUT BREAKING IT AND CHANGE SOME PART INSIDE? is there any electrical part or just mechanical switches (on-off)? the light works well, both red and green. It is just the train does not go on the green. PLEASE HELP thanks in advance ! regards to all forum users ! Share this post Link to post Share on other sites
Merkurius Posted October 23, 2013 I opened the switch (the one with red and green buttons) but it was hard without breaking something. Furthermore, everything in it is controlled by springs and two of them were loose in my switch. Dont have a clue how it works. Especially not when things are missing.. Share this post Link to post Share on other sites
Andromeda Posted November 6, 2013 (edited) Hi, have a look at this post that I would have gotten round to, but your questions have sped up the process ! http://www.eurobricks.com/forum/index.php?showtopic=88329&hl And this one for the lamp. http://www.eurobrick...wtopic=78487 Edited November 6, 2013 by Andromeda Share this post Link to post Share on other sites
