PsychoPimpKiller Posted April 10, 2011 Report Share Posted April 10, 2011 I just got an MDX-CA790X and I think it has some issues. Whenever I shut my car off and get back in later on, the only thing on the radio that works is the tuner. Even if I have MD inserted, I cannot switch to it. I did buy a device to activate the CD changer as an aux input and I'm wondering if that is messing it up or not. I have to push the reset button in order for the darn thing to work properly. It's only been in the car for about 3 days and I'm already getting sick of having to do that. It doesn't do it every time though which is why I am puzzled about this issue. If anybody can help me out with this, I would greatly appreciate it. Thank you. Quote Link to comment Share on other sites More sharing options...
sfbp Posted April 10, 2011 Report Share Posted April 10, 2011 I have one, and it works perfectly despite being a bit bashed up on the removable front panel (the word Sony was completely illegible). This suits me fine as it looks like junk and hopefully no one will burgle car for it. No trouble with changer either. Sounds like you got some 3rd party changer. If you have a Sony changer (and they can be had for $50 or less) you should be able to plug in and go.... NO adapter necessary. If the adapter doesn't work to your 3rd party changer, sling it back at them. I actually suffered with a non-Sony device in the other car, for a while after getting my MD changer, and before getting a Sony headunit. This adapter was the pits... it almost worked but every time a track went over 9:59, everything went nutso. (and same at 19:59 and 29:59 etc). Did you get the red and yellow wires right? If I recall, the YELLOW is always on, the RED is on the accessory switched circuit. What you see could well be explained by having these reversed. They warn you the unit has to be reset whenever power is removed. I'll be any help that I can. I assume yours is configured to Europe-type standards for FM spacing and number of bands - mine has 50Khz and also has a (here useless) longwave AM band too. If not I might be interested in comparing notes. Stephen Quote Link to comment Share on other sites More sharing options...
PsychoPimpKiller Posted April 10, 2011 Author Report Share Posted April 10, 2011 Yes, it is the Europe based model. I bought a 3rd party device that turns the CD changer input into an aux input. Pac Auxon Sony Unilink audio input adapter is the name of it. I had a Sony mp3 CD head unit in my car before this one and all I did was unplug the wiring harness from the old radio and plugged it into this one. Quote Link to comment Share on other sites More sharing options...
sfbp Posted April 10, 2011 Report Share Posted April 10, 2011 If the changer is Sony and the head unit is Sony, why would you do anything other than use the proper Sony interface? (don't answer that) You need the UniLink cables, that's all. A pair of RCA cables and one like this... http://cgi.ebay.com/SONY-CD-CHANGER-CABLE-UNILINK-XM-RADIO-M-BUS-SIRIUS-MP3-/270731359628 There should have been a set with the Sony CD changer when you got it. There's one trick, somehow Sony manages not to connect the grounds together, there is only a single ground connection, avoiding hum/ground/loop problems. What I cannot recall is whether that is done by a special RCA cable with the ground not connected, or by it being disconnected at the changer. But it may be as simple as rummaging in your junk drawer. The cables (3 of them) are usually tied together with fasteners. (duh.... we know that your head unit has the changer control, silly me ignore what was posted there for a while) Quote Link to comment Share on other sites More sharing options...
PsychoPimpKiller Posted April 11, 2011 Author Report Share Posted April 11, 2011 I have disconnected the Pac Auxon aux input device. I have a Roady 2 XM receiver that I prefer to use through the aux input but it will work on an FM frequency. It sounds better through the aux input, in my opinion. I will try this out for a few days and see if it fixes the issues that I am having with this radio or not. Since it is a third party device, it may have been messing with my radio. I will let you know my results. Quote Link to comment Share on other sites More sharing options...
sfbp Posted April 12, 2011 Report Share Posted April 12, 2011 I thought you had a changer. You're saying you have something that LOOKS like a changer. My mistake. Then you're stuck. The alternative (what I did) is to get a used XT-XM1 that plugs straight into the Unilink socket. There are three sources for one on Ebay as I write this note. Stephen PS the "reset-needed" behaviour sounds a lot like the Red and Yellow swapped over. Are you sure this problem you saw was related to the Auxon device? Quote Link to comment Share on other sites More sharing options...
PsychoPimpKiller Posted April 12, 2011 Author Report Share Posted April 12, 2011 Well, so far so good today. No problems at all with my radio anytime I got into my car today. Hopefully it keeps it up so I don't have to worry it. Quote Link to comment Share on other sites More sharing options...
PsychoPimpKiller Posted April 18, 2011 Author Report Share Posted April 18, 2011 Well, it has been almost a week and I haven't had to reset the radio once. It was 3rd party device, Pac Auxon, all along. I hope to enjoy this radio for years to come. I hope it lasts that long anyway. Quote Link to comment Share on other sites More sharing options...
sfbp Posted April 18, 2011 Report Share Posted April 18, 2011 Does the Auxon device have a power connection? Quote Link to comment Share on other sites More sharing options...
PsychoPimpKiller Posted April 18, 2011 Author Report Share Posted April 18, 2011 No, it just plugs into the CD changer plug on the back of the radio. Quote Link to comment Share on other sites More sharing options...
sfbp Posted April 19, 2011 Report Share Posted April 19, 2011 Sounds like a bad connector (or I suppose possibly a design error - but that wouldn't explain why the previous head unit worked ok with it). Quote Link to comment Share on other sites More sharing options...
PsychoPimpKiller Posted May 18, 2011 Author Report Share Posted May 18, 2011 Sounds like a bad connector (or I suppose possibly a design error - but that wouldn't explain why the previous head unit worked ok with it). I didn't have the Auxon device hooked up to my old radio. I bought to use with this radio. It has been a month and I haven't had any problems with my MDX-CA790X since I unplugged the Auxon device. It's so awesome to be able to listen to MD's in my car. I wonder why I didn't get one earlier. Quote Link to comment Share on other sites More sharing options...
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