Yosepower 36V 350W Motor Controller - Failed?

[camtawn]

Hello,

I've had my Yosepower conversion kit since July last year (2019) and I've only ridden around 300+ miles on the bike and it seems to have failed. Now, I'm not too sure if it's the motor, controller, or even the display that has failed. I will end up contacting Yosepower, however I'd appreciate if anyone can give me an insight into what may have failed and why.

The symptoms I'm experiencing are:

• Reduced Power Output to the motor, causing a reduction in acceleration and speed
• The display completely frozen, apart from being able to adjust the PAS Level (this is a KT-LCD3 display)
• Occasionally the motor does not respond to PAS or hand throttle at all
• The voltage regulator (what looks like the 6 MOSFETs but is closest to the battery connector) gets extremely hot after a few seconds of use

Below I've provided some links to the motor controller and what seems to be a replacement motor controller, the controller board seems to be a KTE-6S3-"something" (a piece of metal/solder is covering the final 1/2/3 digits):

Hailong Motor Controller - http://www.szktdz.com/en/news_show.php?article_id=423
Motor Controller Replacement - http://www.topbikekit.com/10s13s14s-36v48v-6mosfets-sine-wave-controller-for-hailong-case-52pcs-cells-p-695.html?number_of_uploads=0

I should mention that the replacement controller in the image seems to be missing a PCB that is wrapped in heat-shrink tubing as well, I have no idea what this is for.

If anyone would be able to help, that would be great!

Cheers,

Cameron

 

[Nealh]

Likely an issue with the controller pcb board, I'm not a fan at all of any in built controller.

 

[camtawn]

Likely an issue with the controller pcb board, I'm not a fan at all of any in built controller.

Cheers, that's what I thought, I'll send Yosepower an email tomorrow explaining my issues. I'm probably going to want to get an external motor controller though right?