MP3 dead after one run.

[MAGICPIE3FOCUSPOWER]

Well I did the test ride, so verything went fine.
Half way of going to home, there is some lag of throtlle (on, off, on off.....).

So pedal back to my home and measure the 5V output.
Hmmm it seems the 5V is not stable, it will travel between 2-5V.


Anyone knows what is the problem?
Yes I know it's the controller but what part of the controller causing this problem?

Thanks!

[Morgen 3Eman]

Hi MAgic.....

Without knowing where you took the measurements,  my recommendation is for you to turn off the battery, and  careful disconnect and reconnect the cables from the MP3.  The symptom you reported is a very common signature of a poorly made connection.  It could  also be a solder joint anywhere in the 5VDC string. 

I suggest you immediately contact whoever you bought it from and let them know you are having a problem.

TTFN,
Dennis

[MAGICPIE3FOCUSPOWER]

Thanks!

I have measured from the front connector number 3.
Also from the nine pins connector coming from the controller.

I have an external controller, maybe this is a better option for reliability?
But has anyone lyaout of the motor wires and hall sensors?

Thanks!

[MAGICPIE3FOCUSPOWER]

Anyone?

[Bikemad]

As you have the external version, I assume your wiring will look something like this:



Your controller connections should also be labelled similar to this:



Use you voltmeter to check the 5V throttle supply by placing the probes on the T1/+5V and the Z/0V terminals, and let us know what the measured voltage reading is, also, whether it is steady or varying up and down.

You should have eight wires coming from the motor:

• Thick yellow wire = Yellow motor phase wire (Ma)
• Thick green wire = Green motor phase wire (Mb)
• Thick blue wire = Blue motor phase wire (Mc)
• Thin yellow wire = Yellow hall sensor output signal (Ha)
• Thin green wire = Green hall sensor output signal (Hb)
• Thin blue wire = Blue hall sensor output signal (Hc)
• Thin black wire = Hall sensor ground (H-/0V)
• Thin red wire = Hall sensor power supply (H+/5V)

Double-check that all of the connectors are properly pushed together as Dennis previously suggested.

Alan
 

[MAGICPIE3FOCUSPOWER]

Thankf for replies!

No I mean have an external Goldenmotor controller laying here.

I want to replace the internal MP3 controller, because I don't trust it anymore

The  5V output is very unstable, also it will travel from 2V to 5V.
It should be a stable 5 volt output?

[Bikemad]

Yes, the 5V supply should be regulated to a nice steady voltage of approximately 5V.

The obvious solution is to contact your supplier and explain the fault to them. If they agree that the controller is faulty, they should send you a replacement controller to put the fault right under warranty.

If you would prefer to use your external controller, you will need to make up a whole new motor cable to extend the leads from the stator to the controller using three thick wires and five thin ones as shown here:



Then you would need to modify all the wires from the harness to enable them to connect to the external controller.

I would strongly advise you not to attempt the controller conversion, unless you fully understand what is involved, and have the necessary skills, wiring materials and equipment etc. to complete this modification correctly.

Alan
 

[MAGICPIE3FOCUSPOWER]

Thank you!

I will send the shop an email about the problem

[MAGICPIE3FOCUSPOWER]

Hmm the seller doesn't reply

[MAGICPIE3FOCUSPOWER]

The seller doesn't response, can I do the warranty via Goldenmotor?

[Bikemad]

You'll have to send an email to David (wyh@goldenmotor.com) and explain your problem to him.
He typically deals with customers who have purchased direct from GM China, the other GM dealers are supposed to look after their own customers.

If you didn't purchase your kit from a GM dealer it may be difficult for GM China to process the claim without proof of purchase etc., but let's hope that David is able to help you sort the problem.



Alan
 

[MAGICPIE3FOCUSPOWER]

Thank you!

[MAGICPIE3FOCUSPOWER]

Got reply back from GM.

Bad news: no warranty because I didn't bought from a dealer!
I think this is a very good excuse!

I have several warranty issues with other brands.
I didn't bought from the dealer even then I had warranty.

O well this is my last GM product....

[GM Canada]

     

Got reply back from GM.

Bad news: no warranty because I didn't bought from a dealer!
I think this is a very good excuse!

I have several warranty issues with other brands.
I didn't bought from the dealer even then I had warranty.

O well this is my last GM product....

I can't seem to figure out what this issue with warranty resolve is. In one post it seems you bought it from a "seller" in another it seems you state you bought it from GM China. Who did you buy it from?

Gary

[GM Canada]

I cannot understand why you are complaining you can’t get warranty support but are still evading my question. I am still waiting for an answer to this question and I have a few more..

1- Who did you buy your kit from?
2- Who told you that you have no warranty?
3- Can you provide the details of your purchase and any conversation you had with GM on this issue in private email to me Garysalo@goldenmotor.ca

I am certainly interested in who would tell you this and what the actual email conversation was.

It seems to me if you are concerned about your warranty and cannot get support, answering these questions would be easy. If you are going to continue to evade these questions than it would seem you have another agenda that is starting to become more obvious. I have heard in the past people stating they can’t get a response from GM China about issues. When I see how much email I get in a day I can only imagine how much email they receive . I'm not saying its right, but I can understand how difficult it could be to follow up on issues. That is why I created a support ticket system on my site. But to state GM has told you that you have no warranty, is something I have never heard of before and would like to look into further to find out what is going on here. There must be some reason that is not clear here and I would like to know what it is so we can all understand.

This reminds me of when I first really became an active member here on the forum. Its was full of people not being able to get email response or warranty resolve. Once I started asking people for details so I could forward them to my contacts I did help some people find resolve. But by far the majority of the people posting their complaints suddenly disappeared. They obviously had a different agenda. Ultimately helping these people out ended up a few forum members coming up with the avatar I use and in me getting my nick name "Super G". So if your complaints are legitimate, let’s get on with it.

If possible answering the first 2 questions here is fine but any receipt of purchase or private conversations with GM China would be better sent to me in private.

Gary