For anyone else who's followed the breadcrumbs here, it looks like the controller on the Bose battery control board includes a temperature readback (the white lead). At room temperature it reads about 90k ohm between white and black.
Thanks for these video's. I notice the new battery you installed said it was for the 'wireless' Q20, but these are not wireless earphones. Could that be why the battery was slightly incompatible?
Hey have you had to reattach the wires back onto the noise cancelling unit from the 3mm jack end, mine got pulled out on a flight. There are so many wires and no indications as to where they go. Any help or advice you have would be most appreciated.
i have not done it personally and the only way to know which wire go where is to open up another one to see. However, this might not be an option and you would not do that either. So if it was me, instead of throwing the headphones away, i would definitely try doing these steps (and please proceed as your own risk if you wish as i am not liable for any consequences in case thing goes south) 1. identity the correlating wire to each ring on from the jack by using ohm meter. Typically it will go by this order based on what i found on internet. the tip of the jack is positive left ear, the second ring is positive right ear, the third ring is ground, and the fourth/last ring is mic. 2. look on the board of the noise cancelling unit to identify the 4 possible location where those wires connected as you probably still see some copper wires left or broken off. 3. Turn the noise cancelling off and try to connect 2 wires at time without soldering (either left or right ear and the ground) with the jack plug in and music playing to see if you can get audio out to the correct side of the headphone (ideally the positive left and positive right should be right by each other or opposite in location, so if you connect the 2 mentioned wire, you should not connect both wires to these contact points. You should do one here and one there kind of combination until you get audio) 4. Once the first 2 wires are connected successfully, the last 2 is easy. you can look at my video at 0.05 where i had the board opened to get an idea of the wire layout. Good luck to you.
Thanks for this. I need to extend the wire coming out and into the audio jack. Do you know where I can buy a wire on Amazon / Ebay to do this? I will need to resolder onto the board..
@annelisabethcom so I ended up just touching the batteries together for like 30 seconds while it was still connected, and then before I soldered the new one in completely. Seems to work fine, have a battery life over 20 hours now. It's a bummer the cables take a beating and don't last long either, but considering the low battery life of new wireless earbuds, I'll take the tradeoff.
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For anyone else who's followed the breadcrumbs here, it looks like the controller on the Bose battery control board includes a temperature readback (the white lead). At room temperature it reads about 90k ohm between white and black.
I'm wondering how you re-ensembled the battery case. Did you just tape it back together?
Thanks for these video's. I notice the new battery you installed said it was for the 'wireless' Q20, but these are not wireless earphones. Could that be why the battery was slightly incompatible?
Hey have you had to reattach the wires back onto the noise cancelling unit from the 3mm jack end, mine got pulled out on a flight. There are so many wires and no indications as to where they go. Any help or advice you have would be most appreciated.
i have not done it personally and the only way to know which wire go where is to open up another one to see. However, this might not be an option and you would not do that either. So if it was me, instead of throwing the headphones away, i would definitely try doing these steps (and please proceed as your own risk if you wish as i am not liable for any consequences in case thing goes south)
1. identity the correlating wire to each ring on from the jack by using ohm meter. Typically it will go by this order based on what i found on internet. the tip of the jack is positive left ear, the second ring is positive right ear, the third ring is ground, and the fourth/last ring is mic.
2. look on the board of the noise cancelling unit to identify the 4 possible location where those wires connected as you probably still see some copper wires left or broken off.
3. Turn the noise cancelling off and try to connect 2 wires at time without soldering (either left or right ear and the ground) with the jack plug in and music playing to see if you can get audio out to the correct side of the headphone (ideally the positive left and positive right should be right by each other or opposite in location, so if you connect the 2 mentioned wire, you should not connect both wires to these contact points. You should do one here and one there kind of combination until you get audio)
4. Once the first 2 wires are connected successfully, the last 2 is easy. you can look at my video at 0.05 where i had the board opened to get an idea of the wire layout.
Good luck to you.
Thanks for this. I need to extend the wire coming out and into the audio jack. Do you know where I can buy a wire on Amazon / Ebay to do this? I will need to resolder onto the board..
Did u manage to do it?
@@MrPirateking619 i tried.. but I couldn't get any audio out of it when soldering
@@delatroy IMO, i would think that the wires were soldered with incorrect order from the ring of the jack to your wire extension to your board
So you didn't need to match the voltage values on the cells before swapping the board over?
With the original board swapped over, that should be unecessary.
However, there's another video where the guy had to match the voltage even with swapping the board over.
@annelisabethcom so I ended up just touching the batteries together for like 30 seconds while it was still connected, and then before I soldered the new one in completely. Seems to work fine, have a battery life over 20 hours now. It's a bummer the cables take a beating and don't last long either, but considering the low battery life of new wireless earbuds, I'll take the tradeoff.