• Hello ES! We could use some help to get us past the finish line on building the new knowledgebase for the forum.
    Can you donate? Please see our fundraising page. Thank you!

Dead TSDZ2 from bad display wiring??

mynameisfiber

New here
Joined
Sep 22, 2018
Messages
8
TLDR; So... I made some grade A mistakes yesterday and now my motor doesn't work. I'm using a TSDZ2 with the VLCD-5 display. Torque sensing doesn't work and when I try doing the walk-assist, it just hear a strange whining coming from the motor with no movement. It's actually less of a whining and more of a very quiet click followed by what almost sounds like electrical arcing?

Let me describe what I did:

I was really annoyed that I couldn't remove the display when I parked my bike. So, I bought some 8pin molex connectors and started wiring them into the display. I wired everything up, plugged it in, but the display wouldn't turn on. No wires were plugged in the to wrong place... but some wires just weren't making a connection. Then, as I was debugging, I realized THAT THE SCREEN COULD ALREADY BE REMOVED :( . It just wasn't documented anywhere. So, completely frustrated but realizing that I may as well reverse what I did and use the built in functionality, I removed the molex and rewired everything together.

With everything rewired, soldered, tested and heat shrunk, I turn on the display and it _LOOKS_ correct..., I get speed on the display (which changes as I bike around), the buttons change mode, I'm able to go into the configuration for the display... it even still has my stats from before I tried this whole thing... but the motor just won't turn! It just makes a very quiet click followed by what almost sounds like electrical arcing

So my question is... what is the problem? Did I somehow burn out the motor controller?

ONE LAST piece of information... I kept the battery unplugged from the bike all last night... I had a theory that there may be a capacitor holding an erroneous state in the controller and if I gave it time to discharge it'd reset. Well, this morning when I did the "plug battery in, try walk assist" test, it started moving (although making very strange noises)... I stopped immediately (my room isn't big enough for my bike to move around), and when I tried it again living the back tire, it went back to making the arcing sound.
 
I got a video of the motor "moving" and making that strange sound. Note that even when I turn on walk assist and the axel DOESN'T spin, it makes that noise. Also... the motor has almost no torque and I can stall it easily with my hands when it is rotating.

[youtube]gRfrPRN4lkg[/youtube]
 
If you watched it on youtube, you'll see in the comments that he replaced the TSDZ2 controller and fixed it,
 
Back
Top