Lorenzo Posted November 28, 2021 Share Posted November 28, 2021 Hi all, I recently had my 350 in at Horsham Developments and they said that they had to recharge the battery due to it being dead (it was with them a while). When I went to pick it up from them my Kenwood head unit (DMX110BT) had stopped working, and the speaker behind the drivers seat now pops every now and then... Safe to say this was the last thing I expected to go wrong after it being in the garage. I've checked the following fuses for audio which all looked fine: Fuse 6 in driver side fuse box (Door mirrors) Fuse 17 DS fuse box (Audio) And Fuse 37 in the fuse box next to the battery (Audio) Any pointers on this one? Assume I need to take the head unit out and check for a fuse on the actual unit? Or something else? Thanks. Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted November 28, 2021 Share Posted November 28, 2021 Perhaps if it is coded you may have lost the code when the battery was in a state of discharge? Quote Link to comment Share on other sites More sharing options...
Lorenzo Posted November 28, 2021 Author Share Posted November 28, 2021 I thought that didn't apply to aftermarket radio units? Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted November 28, 2021 Share Posted November 28, 2021 https://www.manualscat.com/en/kenwood-dmx110bt-manual Quote Link to comment Share on other sites More sharing options...
Lorenzo Posted December 5, 2021 Author Share Posted December 5, 2021 Bump... I have tried the manual reset on the aftermarket stereo, no change. I have also taken the stereo out and the fuse is fine on the back of it. The driver side sub is still popping every now and then and stereo not working. Any pointers on this one? Assume next is to check the sub wiring or such, it was a mess behind the stereo with wiring so potentially an issue there but I don't claim to be an electrician! And disclaimer I did not install the aftermarket head unit 😅 Quote Link to comment Share on other sites More sharing options...
Zoolander Posted December 5, 2021 Share Posted December 5, 2021 Is that metal loop on the black wire ground related perhaps? Connect 2 I would assume is for steering wheel controls so that you can you the buttons on the OEM wheel, doubt that would be causing you any issues. When I had a similar issue on another car I gave in and took it to a Car Audio specialist, those guys can trace faults so quickly generally speaking that it might be less of a headache. Quote Link to comment Share on other sites More sharing options...
Sim Posted December 6, 2021 Share Posted December 6, 2021 Does the head unit even power up? Or does it power up but you get no audio, just the odd pops? Quote Link to comment Share on other sites More sharing options...
Lorenzo Posted December 6, 2021 Author Share Posted December 6, 2021 Yeah the metal loop was bolted to the stereo holder frame through one of the bolts. And no, no power to head unit at all. But weirdly the speaker behind the driver seat pops every now and then (the most annoying part). I may just take it to an auto electrician like you say, there are a couple good ones in Bristol it seems. Cheers. Quote Link to comment Share on other sites More sharing options...
Sim Posted December 6, 2021 Share Posted December 6, 2021 4 hours ago, Lorenzo said: Yeah the metal loop was bolted to the stereo holder frame through one of the bolts. And no, no power to head unit at all. But weirdly the speaker behind the driver seat pops every now and then (the most annoying part). I may just take it to an auto electrician like you say, there are a couple good ones in Bristol it seems. Cheers. The reason for the pops is likely to be down to the separate amp being powered up but not the headunit, have you got access to a multimeter and the wiring diagram to see if power is getting to the head, it could just be a blown head sadly. Quote Link to comment Share on other sites More sharing options...
DarmoZ Posted December 21, 2021 Share Posted December 21, 2021 If when changing the battery the positive and negative touched for a sec by accident, it can blow the internal fuse inside the head unit which can cause issues like alternator whine and what you are experiencing. Easiest way to know would be to go to a car audio shop and have them plug in a different head unit they know is good to test and see if it solves the issues. Quote Link to comment Share on other sites More sharing options...
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