DuckBricks Posted June 19, 2014 Posted June 19, 2014 Hello Everyone, An old friend of mine just gave me all of his old LEGO, with bricks ranging from those that say "patent pending" to recent Hero Factory weapons. Basically, I have no idea how old/new the brick in question is. It is one of the more recent sound bricks, and unfortunately the batteries were dead. When I changed the batteries, it didn't work... the side states "2016," and what I can see of the motherboard says 2016 as well. Any ideas? legozebra EDIT: The motherboard states: 54870, 20A 84875(00-08)PCB COPYRIGHT LEGO COMPANY 2005/12/14 2006 C1 0553 S1 Quote
Darth Dino Posted June 19, 2014 Posted June 19, 2014 Hi well, at least i kmow the age of the brick. Just look at the production date: 2005/12/14. Dino Quote
JopieK Posted June 19, 2014 Posted June 19, 2014 it could help if you can provide the size of the brick, the colors, etc. apart from that, a circuitboard ≠ motherboard though a motherboard == a circuitboard ;) maybe this one? http://www.bricklink.com/catalogItem.asp?P=55206c01 Quote
Gnac Posted June 19, 2014 Posted June 19, 2014 [...] unfortunately the batteries were dead. When I changed the batteries, it didn't work [...] It's possible that the thin metal part which comprises the "switch" isn't making a connection somewhere. I recommend using some tweezers to bend the contact points out juuust a little bit, then see if you get any response out of it. The circled part in the image below is a common culprit. Also check if the connection points are clean and free of verdigris. Other possibilities involve detached wires between the PCB and speaker, or worse, the speaker's transparent membrane may have become torn or detached. In the latter case, it may be less trouble to buy a new one, that is if you REALLY want to hear the sound of a robot cow. Quote
DuckBricks Posted June 20, 2014 Author Posted June 20, 2014 it could help if you can provide the size of the brick, the colors, etc. apart from that, a circuitboard ≠ motherboard though a motherboard == a circuitboard ;) maybe this one? http://www.bricklink....asp?P=55206c01 You got it! I took out the motherboard and soldered it to some old headphones (as the speaker is damaged), and I could hear the sound. Thanks so much, everyone! Other possibilities involve detached wires between the PCB and speaker, or worse, the speaker's transparent membrane may have become torn or detached. In the latter case, it may be less trouble to buy a new one, that is if you REALLY want to hear the sound of a robot cow. Yes, the speaker's membrane was damaged... Luckily I, too have a copy of the set (somewhere around my LEGO lair) So it isn't much of a problem. Quote
JopieK Posted June 20, 2014 Posted June 20, 2014 motherboard? you mean circuitboard, it is not a PC you see. They are 1$ at bricklink so... Quote
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