Chord Mojo issue solutions thread.

[amigomatt]

 

  ....  What do people recommend as a tried and tested charger for the Mojo?

 
Judging by what I tend to see in the main Mojo thread, a lot of people seem to be using a standard genuine-Apple iPad charger, with success.
 
 
Please understand that I'm not saying your issue is definitely charger-related. We're just trouble-shooting, at this stage, so I wouldn't want you to shell-out on anything expensive, charger-wise. A standard genuine-Apple charger shouldn't cost you much, though

 
 
I should also mention that some charging leads have a relatively high resistance, and, although it may sound a little crazy, it is worth trying a different one, just to narrow down possible influences on your charging issue.
 
 
.

 
 

  I also took the liberty of asking Rob Watts for some input, and here is what he said:
 

Originally Posted by Rob Watts
 
 
Firstly the 4/5 hours is the charge time whilst it is in constant current or full charge mode - so that will get you to blue. But after that it goes into trickle charge mode, and the white light will still be on. I can't remember how long the trickle charge mode is, but I guess 9 hours would be right for full and trickle charge.
 
Of course, if you are charging whilst on it will take very much longer to charge, and the charger timer might get triggered then you get the flashing white battery LED. The charger timer circuit is only on during full charge mode. So if it's fully charged, and then you plug in the charger and turn it on, then the white charger light will stay on permanently as the trickle charge is being balanced by the current Mojo is drawing (no net current into or out of the battery).
 
Hope that explains!
 
Rob

Thank you very much for your help @Mython and @Rob Watts I shall investigate further now.  @Mython - I made sure I invested in good usb cables for charging as I've had plenty of issues with other devices/pc connections that have been cable related.  Thanks again.  i'll report back if I have any more problems 

 

[LeeMark]

I have had the Mojo for around a month and love(d) it, but the last few days the music has been cutting in and out playing off my iPhone, wiggling the USB connected cord helped, but today nothing works and the iPhone no longer recognizes it and even says it does not support this accessory. It is not the USB cable as it happens with others and it is not the iPhone as the same thing happens with my computer. I am so sad and I am sure it needs to go back to be fixed or replaced. I called them to day format eh US and they said to email them which I did. I am waiting to hear back but was wondering if others have this issue and has anyone gotten it fixed or now a quick fix for this. Thanks.

 

[Mython]

What USB connector does your USB-Lighting cable have? (the one you usually use with Mojo).

 

[LeeMark]

Moon Audio Silver Dragon and the Apple CCK.

 

[Mython]

The reason I asked about the connector is that very few audiophile cables have L-shaped connectors, so they have an increased chance of stressing the USB socket of DACs, due to exerting too much accidental leverage. So, damage to Mojos USB socket is one possible cause of your issue.
 
Additionally, I know quite a few people have experienced issues with even genuine-Apple CCKs, so it might be worth trying a new CCK.
 
 
Or maybe the M-A cable itself might have developed a fault.
 
 
It seems you're going to need to swap each part of your chain, in turn, to troubleshoot this issue.
 
Sorry I can't provide you with a more definite answer, but without having your set-up in my hands, I can't do more than suggest possibilities to explore.
 
As I remarked, a few minutes ago, in the main Mojo thread, it has, surprisingly, been known for Apple iOS updates to sometimes increase the likelihood of error messages being generated, when USB devices are connected to an iDevice - do you know if your iOS was updated around the same time your errors began appearing?

 

[LeeMark]

I didn't update anything recently. This all began with the sub connector on the mojo. If the usb cord wiggled at all, I lost the connection. To me it seems a mojo issue. I can't see how it's the CCK but I can try another.

 

[Mython]

I didn't update anything recently. This all began with the sub connector on the mojo. If the usb cord wiggled at all, I lost the connection. To me it seems a mojo issue. I can't see how it's the CCK but I can try another.

 
 
Please don't feel I'm making excuses for Mojo.
 
Issues happen with all sorts of equipment - such is life.
 
If I had your equipment in front of me, I'd happily help you troubleshoot it, but because I don't, all I can do is offer you possibilities to explore.
 
You have the luxury that I don't, in that you have it right in front of you, so if you can clearly observe that the USB socket is faulty, then so be it.
 
If it turns out your Mojo USB socket is damaged, then I'm sure your dealer will help to get it repaired.
 
No harm in exploring a few other possibilities before sending it back, though.
 
I recall the occasional person mentioning that some cheap generic micro-USB cables can have loose-fitting plugs, but since your cable presumably uses high-quality plugs, that's unlikely to be the reason.

 

[LeeMark]

   
 
Please don't feel I'm making excuses for Mojo.
 
Issues happen with all sorts of equipment - such is life.
 
If I had your equipment in front of me, I'd happily help you troubleshoot it, but because I don't, all I can do is offer you possibilities to explore.
 
You have the luxury that I don't, in that you have it right in front of you, so if you can clearly observe that the USB socket is faulty, then so be it.
 
If it turns out your Mojo USB socket is damaged, then I'm sure your dealer will help to get it repaired.
 
No harm in exploring a few other possibilities before sending it back, though.
 
I recall the occasional person mentioning that some cheap generic micro-USB cables can have loose-fitting plugs, but since your cable presumably uses high-quality plugs, that's unlikely to be the reason.

I agree with everything you said.  I did order from lavricables (mentioned by others in the main Mojo thread) a lightning cord that incorporates the CCK directly into the cable with right angle attachments so this will tell me if it is the original CCK, but I really doubt that too.  I bought this from another person in headFi so I don't have a local dealer, hopefully there is a place to send this int eh US to get it fixed if that is what it needs.  I am in communication with Chord in the UK and hope to hear back from them this week.  One thing Id id learn, the difference in listening to Tidal with and without Mojo is huge and not having the Mojo is almost painful, that's how good it is.

 

[Mython]

  .... I am in communication with Chord in the UK and hope to hear back from them this week.

 
Chord do take customer service seriously - if you don't hear back from them by the end of next week, let me know, but it's unlikely.

 

[harpo1]

   
Chord do take customer service seriously - if you don't hear back from them by the end of next week, let me know, but it's unlikely.

I'm sorry I love my mojo but it shouldn't take any company a week or more to respond to customer issues if they truly take customer service seriously.

 

[Mython]

 

   
Chord do take customer service seriously - if you don't hear back from them by the end of next week, let me know, but it's unlikely.

I'm sorry I love my mojo but it shouldn't take any company a week or more to respond to customer issues if they truly take customer service seriously.

 
I totally agree, and, as I said, it's unlikely that it'll take them that long.
 
To be clear: I don't work for Chord.
 
I just help out, here and there, on Head-fi.  Hence, in the unlikely event that you haven't heard back from them, I will be happy to help chase it up for you.
 
Let's just see what the coming week brings, in terms of Chord contact

 
 
 

---

EDIT: I chased this up, with Chord Electronics, UK, the same evening (6-11-16), and they communicated soon afterwards, with LeeMark

 
 

---

 

[LeeMark]

I am getting a replacement from the US dealer that it was bought from, Fatwyre, so I think things will work out in the end.

 

[ElDanno]

I have a problem with mine I can't work out.

I'm on my 2nd replacement mojo, had it for 5 months now. I use an iPad charger and when I turn it off and plug in to charge, the white charging light comes on and goes off after about 5 seconds. The battery is depleted because when I try turn it on while unplugged to the charger the charging light flashes red and turns off by itself.

Things I have tried:
- multiple different usb chargers, iPhone, iPad and generic
- multiple different cables including the bundled one
- have just left it plugged in overnight, still not charged.

One other thing, if I leave it plugged in charging and turn it on, it stays on indefinitely with the white light on but does not charge. Have left it this way overnight and once unplugged from iPad charger it just turns off again.

And ideas before returning it again? Thanks

 

[miketlse]

I have a problem with mine I can't work out.

I'm on my 2nd replacement mojo, had it for 5 months now. I use an iPad charger and when I turn it off and plug in to charge, the white charging light comes on and goes off after about 5 seconds. The battery is depleted because when I try turn it on while unplugged to the charger the charging light flashes red and turns off by itself.

Things I have tried:
- multiple different usb chargers, iPhone, iPad and generic
- multiple different cables including the bundled one
- have just left it plugged in overnight, still not charged.

One other thing, if I leave it plugged in charging and turn it on, it stays on indefinitely with the white light on but does not charge. Have left it this way overnight and once unplugged from iPad charger it just turns off again.

And ideas before returning it again? Thanks

 
You have already tried the most obvious solutions, but there is one other possibility that springs to mind.
 
In the main Mojo thread  http://www.head-fi.org/t/784602/chord-mojo-the-official-thread-please-read-the-3rd-post , in the third post, and the section Mojo is taking much longer than expected, to charge (Click to hide), there is mention of the battery protection mode that Mojo enters if the battery has been discharged more-deeply than usual:
 
Quote:

 

  .... I am thinking the battery is not holding any charge. 

Try charging overnight with the unit off. The charging circuit looks at the state of the battery before charging. If the battery has a very low voltage, it will trickle charge the battery until it gets to a safe voltage, and then full charge will commence. This trickle charge mode can take several hours, and it is done for safety reasons, and it will appear that the battery is not working as the trickle charge mode takes some time. When in this mode Mojo must be off.
 
When charging make sure the battery light is white and not flashing - if it flashes, pull out the charging cable, count to ten, re-attach the charging cable. If it continues to flash, it is most likely the charger is not giving 1A at 5V, so use a better charger.
 
Rob

 
I seem to remember that this battery protection mode has been mentioned several times in the various Chord threads, and I interpret it to come into operation when the battery has been depleted almost fully empty - and the battery then has to be trickle charged until until it has reached some minimum charge level, at which point it is safe for the normal charging process at the full rate can begin. I think that it was also mentioned that the Mojo remains in this battery protection mode (and unreceptive to recharge), until the Mojo has been switched off for a short while (this seems to trigger some form of reset switch), and only then try to recharge the battery. Maybe this is what Rob Watts is alluding to, when he states that Mojo must be off in this mode.
 
Maybe you have been trying to recharge Mojo, whilst it is switched on, and the battery protection mode is still in operation. If so then try recharging with Mojo switched off.

 

[ElDanno]

Maybe you have been trying to recharge Mojo, whilst it is switched on, and the battery protection mode is still in operation. If so then try recharging with Mojo switched off.

Thanks! I tried charging mojo for an entire day today, but still the same. While turned off, the charging light comes on for 5 seconds then turns off, then doesn't charge at all after about 20 hours.

Looks like I need to return another mojo to my dealer.