Inductores Posted March 3, 2019 Share Posted March 3, 2019 I just removed the components of my faulty main board and removed the solder mask: TOP layer BOTTOM layer Well, if you take a closer look to the TOP layer, you can see a big design failure (according to my criteria): Just take a look how close the vias from the VPHASE plane (one motor wire) are from the "GND" plane (well, actually this plane is joined to the GND plane through two 4M0 resistors, you can see it on your own board). I didn't measure the distance between planes, but I consider it's too dangerous for a self-balancing device. As well as this, I also found some non-sense trace layout, like high-voltage traces very close one to another when there is space enough to separate them more, or some "uncompleted" planes, somehow aestethic problems but could be easily modified. I don't know if these failures were solved in the next updates (V2 and V3, my model is a V1), but for me this is a nice way to shortcircuit the board and get an instant cut-off. If these mistakes are also in the new boards, personally I would think twice to buy one of them. In my case I'm going to try to make a proper layout redesign to manufacture a new PCB and mount it to my V1 GT16 (also with new thicker wires). Link to comment Share on other sites More sharing options...
Scrounch Posted March 25, 2019 Share Posted March 25, 2019 Hello I hope you'll succeed your job, because my motherboard, (a v3 gt16, a 1.4 version ) burned too and i don't trust on my wheel!!! if you succed i 'll be interest to buy you one !! thk you Link to comment Share on other sites More sharing options...
esaj Posted March 26, 2019 Share Posted March 26, 2019 @Inductores: Out of curiosity, how did you remove the solder mask? Just by scraping or is there some chemical for this? I've removed the conformal coating from a Firewheel-board before by soaking it in IPA (which seemed to make the coating soft) and then scrubbing it off with a toothbrush that had its bristles cut short, but that won't do anything to solder mask. Link to comment Share on other sites More sharing options...
Inductores Posted March 27, 2019 Author Share Posted March 27, 2019 18 hours ago, esaj said: @Inductores: Out of curiosity, how did you remove the solder mask? Just by scraping or is there some chemical for this? I've removed the conformal coating from a Firewheel-board before by soaking it in IPA (which seemed to make the coating soft) and then scrubbing it off with a toothbrush that had its bristles cut short, but that won't do anything to solder mask. I removed some coating I applied before and some flux residues using IPA, and the solder mask was removed using water sandpaper (it removes the solder mask but barely the copper traces, only the surface) Link to comment Share on other sites More sharing options...
Inductores Posted May 10, 2019 Author Share Posted May 10, 2019 If your GT16 rides like this: Take a look to the bottom soldering on your board: Just found on a new GT16 board, rev. 1.4 Link to comment Share on other sites More sharing options...
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