Chord Mojo issue solutions thread.

[jmills8]

 

[natalieann]

Why would the button that changes depending on the type of file, continuously stay red all of a sudden???

 

[zept0sec]

  Why would the button that changes depending on the type of file, continuously stay red all of a sudden???

 
Your source device may have been set to output a fixed 44.1khz stream.

 

[iichigoz]

Hey guys, I recently tried using the mojo connecting to my PC while charging. It is connected to a very small speaker and the Mojo will just power off itself and it gets really hot. Is this normal?

 

[harpo1]

  Hey guys, I recently tried using the mojo connecting to my PC while charging. It is connected to a very small speaker and the Mojo will just power off itself and it gets really hot. Is this normal?

Completely charge it first before using it while charging.

 

[Mython]

  Hey guys, I recently tried using the mojo connecting to my PC while charging. It is connected to a very small speaker and the Mojo will just power off itself and it gets really hot. Is this normal?

 
 
If you read the section 'Battery & Charging', in post #3 of the main Mojo thread, you'll see lots of useful information.
 
 

 

   
That's not working for me. The unit turns off after a while. Probably when it gets too warm. That was kind of a disappointment as I was going to use it as a DAC for my PC as well.

You get the most power loss when it is charged from red; and when its being charged at full blue then the power from charging is very small.
 
If you do need to charge and listen at the same time from red, and its in a hot room, then if you charge it with Mojo on its side so the top and bottom is in free air, it will not turn off. A head-fi poster mentioned this and it works well, as Mojo's power dissipation is almost doubled by doing it this way.
 
Rob

 
 

  If you fully charge Mojo then use it in a desktop it will not switch off; the power dissipation that the charger uses in matching the current drawn by Mojo is negligible. You are only at risk when charging and using at red - and indeed as Mython says putting Mojo on its side will solve that issue too.
 
Just to give you some numbers - fully charged and matching Mojo's current draw the power dissipation is 107 mW for the charger circuit. That will increase running temperature by less than 1 deg C. But at flashing red it is 910 mW for the power dissipation in the charger.
 
Now I could fix this by using a switcher based charger rather than a linear one - but these inject too much RF noise onto the battery. This would impair sound quality, and Mojo's design goals was that plugging in the charger would have no significant change in SQ - which would not happen if I used a switcher based charger. I am not prepared to damage SQ as to me this is the most important aspect just for a tiny improvement in usability.
 
Rob

 

[miketlse]

  Hey guys, I recently tried using the mojo connecting to my PC while charging. It is connected to a very small speaker and the Mojo will just power off itself and it gets really hot. Is this normal?

 
Lets try and understand this correctly - you are trying to use the Mojo to drive a small loudspeaker, rather than a pair of headphones?

 

[iichigoz]

Lets try and understand this correctly - you are trying to use the Mojo to drive a small loudspeaker, rather than a pair of headphones?

Correct me if Im wrong, but there shouldn't be any difference in power output be it if its a speaker or iem. If there's not enough power the sound coming out from it will just sound weak. Im actually jist using it with a portable speaker like a sony x33. The mojo wont know if there is or isnt enough power.

 

[harpo1]

Correct me if Im wrong, but there shouldn't be any difference in power output be it if its a speaker or iem. If there's not enough power the sound coming out from it will just sound weak. Im actually jist using it with a portable speaker like a sony x33. The mojo wont know if there is or isnt enough power.

It will work fine with a powered speaker like the sony x33.

 

[BigAund]

I need some advice. Got a mojo on Friday, so far works fine by optical into ak120 but when I try to connect it to my android phone (htc10) it doesn't work. I get a quick flash of light on the mojo but that's it. The phone only registers the mojo as a charging device. Any ideas? Thanks in advance!

 

[Mython]

I need some advice. Got a mojo on Friday, so far works fine by optical into ak120 but when I try to connect it to my android phone (htc10) it doesn't work. I get a quick flash of light on the mojo but that's it. The phone only registers the mojo as a charging device. Any ideas? Thanks in advance!

 
Most people on Head-fi who follow this thread also follow the main thread, so please try not to cross-post, as it can end up confusing the issue and/or wasting time.
 
Since things are already under way, with your issue, in the main thread, it's probably best to just continue there

 

 

 

[DaStrow]

Hey guys I was the proud owner of a Chord Mojo until the USB connection stops being detected by my pc and my iphone although the power button lights up red. Any idea what I could do?

edit: Before this happened, I could attach and then reattach the mojo around 10+ times and eventually the pc or iphone would detect it but that doesn't work anymore

 

[miketlse]

  Hey guys I was the proud owner of a Chord Mojo until the USB connection stops being detected by my pc and my iphone although the power button lights up red. Any idea what I could do?

edit: Before this happened, I could attach and then reattach the mojo around 10+ times and eventually the pc or iphone would detect it but that doesn't work anymore

Is your PC really a macintosh?

 

[DaStrow]

Its a windows pc but I can see where you got confused haha.

Anyways I've tried switching usb cables and usb ports. With the supplied chord USB wire it still doesn't detect.

The red light would persist for 2 wire reattachments. After 3 wire reattachments, the chord mojo power button will not light up.

 

[Mython]

  Its a windows pc but I can see where you got confused haha.

Anyways I've tried switching usb cables and usb ports. With the supplied chord USB wire it still doesn't detect.

The red light would persist for 2 wire reattachments. After 3 wire reattachments, the chord mojo power button will not light up.

 
 
Have you tried charging Mojo while it is NOT connected to your computer, until Mojo is fully charged, and only then trying to connect to your computer?
 
Also, please let us know what charger you are using to charge Mojo.
 
 
Cheers!