I’ve had a few wifi dropouts recently and JB are sending me a new PCBA main board to replace myself as I didn’t want the hassle of sending the trainer back. I’m assuming it’s got some new updated wifi components on it. Hopefully that will fix it as I’ve been really pleased with it other than the drop outs.
Please let us know how the swap went. I’m in the same situation. I’m using Bluetooth until the end of the indoor season.
Thanks,
David
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I’ve just had an email from JB saying I should receive the new board tomorrow. So I should have time to get it swapped over this weekend. I’ll let you know how it goes.
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So, I’ve swapped the boards over and it’s pretty straight forward. The only slight issue I had was trying to pull the speed sensor connector off the board, it was very tight and needed quite a bit of force. The other connectors all came off easily as they were a different type with the tabs on that you press to release them. The new board received had the same version number as the old board (v3.11) but the dot-matrix style text below that had a different number on it. Unfortunately, whilst testing last night I had another wifi dropout so JB are currently looking at my latest log file, but it sounds like I will be getting sent a new trainer.
I sent my second unit in to get the bearings replaced and checked over. Hopefully it’s smooth and maybe I can use WiFi.
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Was that the main board? I just received a replacement speed sensor, hopefully I’ll have time tomorrow to try and replace it.
Yes, mine was the main board replacement. How come you have to replace the speed sensor? That looks a lot more involved to replace than the main board. I couldn’t even see the speed sensor when I replaced the main board, maybe you gain access to it from the other side of the trainer?
I reported that I had dropouts on wifi and they (the Canadian importer) said it was likely an issue with the speed sensor that JB were aware of. No idea how this could be the case. They sent these instructions on how to do it.
It’s not clear to me where the picture is in the top of step 5, hopefully it will be clear as I’m taking it apart!
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That does seem odd, to replace the speed sensor for a WiFi dropout issue. Looking at those instructions, it’s a much more complicated job than mine was. The top pic for step 5 is the other side of the trainer with the flywheel removed, so once you have removed the flywheel, you will have access to the speed sensor. I hope it all goes smoothly for you and it fixes the issue.
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Maybe we’re the guinea pigs, if mine works and fixes the wifi dropout they’re going to send you a speed sensor too 
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Hopefully they will be sending me a speed sensor with a new trainer attached to it
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This is very helpful. I’ve disassembled my trainer because of pulley vibration issues in the past but was never sure on the torque specs for the pulley bolt. I’ve noticed that too loose = vibrations but too tight = binding and humming.
The torque is a bit wonky though because, at least on my trainer, the “teeth” on the underside of the pulley flange bolt had worn into the aluminum pulley causing a set of steps to form. I think I have a picture in this thread somewhere from December showing the wear pattern. Definitely use locktite or else the bolt will loosen and cause vibrations and clunking.
I just replaced my speedsensor for this same issue. Im having 2 issues in fact. Wifi dropouts same as reported that require me to restart the trainer to re-pair after 50minutes of use, and wierd cadence and power issues when I stop pedalling. I contacted support, they sent me a speed sensor, replaced it, it fixed nothing, Im having to send the whole trainer back today so Im lilkely to be without a trainer for possibly months as they have no stock to replace 
Ah man I could have used this when I replaced the speed sensor. I unclipped the tension spring, my god that thing was hard to re-attach. That spring is STRONG.
There’s definitely a technique. I used to own a subaru with a stretch belt, and they sold a tool to get that belt on. I use a similar technique with the victory, just walk the belt off the flywheel pulley with my fingers while slowly turning it. To get it back on, guide the belt over the flywheel and tensioner pulleys and then loop half of it over the back of the drive (big) pulley. Slowly turn the drive pulley and it will all snap into place.
So I’m trying to replace the speed sensor. The instructions now say “slide the main disc out through the unit”. Well the main disc ain’t moving. I’m wondering if the magnets are holding it in place. I have a (broken) Neo and garmin has the disc extractor tool which I’ve used and the magnets hold it in firmly. If it’s the same I don’t think I’m getting it off without something similar.
Can you turn the trainer over and slide something flat and long in the gap either side of the flywheel and then pull it up and out that way? On mine there’s quite a big gap you can almost fit your fingers in. It might be easier to unplug the speed sensor from the main board before you turn the trainer over so you can take the old speed sensor out without having to turn the trainer back over again.
I managed to slide a small cargo strap under the disc, but it still wouldn’t budge. One of the issues is I’m on my own today (hence I had time to muck about with it), but I could have done with someone else to hold the thing down as I pulled on it.
From experience with the Neo disc extraction tool if it is magnets it’s going to be tough doing it by hand.
The instructions make it sound so easy - “just slide it out”. Is that what the hammer is for on the first page of the instructions, to gently tap it out? Sorry I don’t have any more ideas, hopefully some-one from JB can advise you how to do it and they probably need to update their instructions too.
I tried a rubber headed hammer I have, but not too hard and it didn’t budge. Looking at the instructions again that big metal pin on the first page looks like it might be to place on the spindle to then whack that with the hammer. I also see in that picture the spring tensioner tool that they say you need, but don’t mention. That would be fantastic in getting the belt back on which was a PITA putting the thing back together.
I did write to them so I’ll see what they say. Maybe in the meantime I’ll look around and see if I have a similar sized metal pin.