Truck is having 6 cells of 1.5 v general size.I connected all cell positions by fixing wire pieces in cell slots.Later I tried to charge by choosing required voltage of 9v,by connecting two end terminals of opposite polarity,but device is not producing sounds. What remedy I can do?
You need only concern yourself with the anode terminal of the first battery chamber and the cathode terminal of the last battery chamber. You do not need the connect a wire where each battery used to be. Apply the proper polarity at 9 volts and with sufficient current and the toy will run.
I done ,even open it's body and connected it's soldered terminals,but sure something short,what it could be predict it by experience.May be due to dropping from heights. Last week,my kids dropped a musical pad from top of sofa,it was very nice collection of tones.Can anyone predict,which component to be looked?where is problem in such cases?
Hi, Thaqalain. Your experience in your first post may have caused the wall wart to expire. You admitted to shorting it out, which may have let the smoke out of the wall wart. If you can't check it with a meter, I'd look into finding a known good wall wart first. These toy trucks may take up to an amp of current, so make sure you get one that can handle that much of a load. Also, try to avoid the ultra-small, ultra-light 9V adapters no matter what their current rating -- they have cheapie switching power supplies, which chuckle weakly and die when faced with a momentary short or the inductive kick of a toy motor. Get a fairly heavy one that's an "unregulated" 9VDC supply rated for at least 1 amp. And make very sure it says "9VDC", not "9VAC".
Having checked that off, you may want to look at the innards of the toy and see that you've actually connected the wires of the wall wart to the wires coming from the batteries. Just twisting them together isn't good enough -- you'll have to solder. Be sure to provide some kind of strain relief -- you don't want the toy truck to drive away and pull off the solder joints.
If that's checked off, it's conceivable you could have the wires backwards. That's especially the case if there's an IC, microcontroller or some such in the toy. You still may not have smoked the toy, though, because if it needs a polarized supply, they'll frequently put a blocking diode in series which may have saved the day. Try reversing the wires from your wall wart to the toy.
You may be almost there. Keep trying.
Good luck Chris
Thanks Mr. Chris for your knowlegeable reply.I will remember u in this forum.
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