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FastFranz

Brand new Tomix/Tomytec Bus System NOT running

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FastFranz

Ciao,

 

I opened today (got it time ago) a packages containing a brand-new BM-01 frame/engine. As I said it's new/never used all I did has been putting in place the requested battery (2xLR44) and pushing the micro-switch: to my utter desappointment, NOTHING HAS HAPPENED! It refused to start, period! 

 

I pulled out/pulled in batteries two/three times, cleaned the contact but ... 🥺😵 🥺😵 😵. Any idea on where I should look for the bug?

 

Greetings - sadly I left Africa about two years ago - from Ha noi (VN)

Francesco

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brill27mcb

Make sure you are putting the batteries in right side up, which always seems upside-down to me. I am used to the flat end of a battery being the bottom, from larger (AA, A, C, etc.) batteries, but these small batteries usually get oriented the other way.

 

Also try varying how long you hold down the on/off button. Too long doesn't work, and just poking it seems to be too short. There then seems to be a slight delay before the wheels start turning. So just experiment a bit, patiently, before giving up all hope.

 

Rich K.

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Sascha

I also had this problem. Make sure you buy brand name batteries. The cheap ones didn't work. I got Duracel.

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FastFranz

Ciao (stays, in italian, for Hi),

 

@Sascha: I gave a try to Duracell/Energizer and another brand (chinese, found here in Ha noi): no way.

 

@brill27mcb: I will try a different timing when switching (well, trying to ...) to run!

 

Thx for your suggestions I'll keep you tuned.

Francesco

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FastFranz
Posted (edited)

Ciao,

 

NO WAY!!! ... Many attempts with different "push-time" (on the micro-switch). Many attempt swithcing battery faces (same face up at same time) led me to no result: stubbornly refuses to go! 🤐  🤐  🤐. Any other hint?

 

Francesco

Edited by FastFranz

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Madsing

Make sure there is a good contact between the motor and the PCB. Two places (highlighted in red in the photo below):

1. (most important) at the back of the bus, there is something that looks like a spring, it must make contact with the back of the motor, i.e. the metal/green cylinder next to it

2. in the middle of the PCB, there is a contact that is pressed against the side of the motor just below

Gently try pushing/moving these two parts a bit with a toothpick or a small piece of plastic.

 

IMG_1637.thumb.jpeg.33451d7c20351bf02828480bf51892fd.jpeg

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FastFranz
Posted (edited)

Ciao,

 

@Madsing: OK, i'll give it a try. THX

 

Francesco

Edited by FastFranz

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FastFranz

Ciao,

 

Madsing, you are right! ... 👍.

 

All the same, regrettably i haven't reached my goal: I attached two small piece of electric wire to shown contacts and that to an AAA battery. Doing so the engine revs the way it has to. Then the bug is in contacts (already had this problem with, at least, another frame/engine) but the toothpick was not the solution: using due contacts it doesn't work at all!  ... I'm stuck, now. 

 

Francesco

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Madsing

Do you have a multimeter to check that you have 3V power supply on the PCB? You can check at the two solder points left and right of the top screw that holds the battery container with the motor and PCB.

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cteno4

A cheap little multimeter is always your friend and oh so handy!

 

jeff

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