xdudebrahx Posted March 14, 2012 Share Posted March 14, 2012 1996 RD690S triaxle. Stock speakers, aftermarket head unit. Just put in the new head unit and harness this morning to replace old aftermarket one. I'm getting almost no volume out of the speakers. I have to turn the volume all the way up, and even then, you can barely hear anything from the speakers.I've never torn into anything like this before, but I was wondering if anyone had any ideas or tips before I did. It's a company truck, but the mechanic has bigger issues, so I'm gonna stay after work and get into it myself. Any tips? Quote Link to comment https://www.bigmacktrucks.com/topic/23840-help-me-troubleshoot-my-stereo/ Share on other sites More sharing options...
Rob Posted March 14, 2012 Share Posted March 14, 2012 If you can hear anything from the speakers chances are you have a blown power supply to the amplifyers in the chassis. Hardly worth working with these days as they are considered a "throw away" item due to VLSI and complexity. Open the unit up, there may be a fuse blown.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/23840-help-me-troubleshoot-my-stereo/#findComment-107290 Share on other sites More sharing options...
xdudebrahx Posted March 14, 2012 Author Share Posted March 14, 2012 Where would I find the amps to take a look at them? Quote Link to comment https://www.bigmacktrucks.com/topic/23840-help-me-troubleshoot-my-stereo/#findComment-107292 Share on other sites More sharing options...
Rob Posted March 14, 2012 Share Posted March 14, 2012 Where would I find the amps to take a look at them?Take the case apart, they will have cooling fins stamped, or moulded into them and usually are bolted/screwed to a piece of aluminum.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/23840-help-me-troubleshoot-my-stereo/#findComment-107304 Share on other sites More sharing options...
57 bcr Posted March 14, 2012 Share Posted March 14, 2012 Just a thought-are the speaker grounds (& all radio grounds) good? Quote IF YOU BOUGHT IT, A TRUCK BROUGHT IT..AND WHEN YOU'RE DONE WITH IT, A TRUCK WILL HAUL IT AWAY!!! Big John Trimble,WRVA Link to comment https://www.bigmacktrucks.com/topic/23840-help-me-troubleshoot-my-stereo/#findComment-107305 Share on other sites More sharing options...
xdudebrahx Posted March 14, 2012 Author Share Posted March 14, 2012 I know I'm gonna have to pull the headliner down, and I am planning on inspecting the wires/grounds. Rob, other than the head unit and speakers, I have no idea where anything else is located. Please be more specific as to where the amps themselves are located inside the cab. Quote Link to comment https://www.bigmacktrucks.com/topic/23840-help-me-troubleshoot-my-stereo/#findComment-107313 Share on other sites More sharing options...
Rob Posted March 14, 2012 Share Posted March 14, 2012 I know I'm gonna have to pull the headliner down, and I am planning on inspecting the wires/grounds.Rob, other than the head unit and speakers, I have no idea where anything else is located. Please be more specific as to where the amps themselves are located inside the cab.It should all be one unit.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/23840-help-me-troubleshoot-my-stereo/#findComment-107326 Share on other sites More sharing options...
xdudebrahx Posted March 14, 2012 Author Share Posted March 14, 2012 The head unit is a brand new Panasonic. The speakers only have a black and white wire attached to them in the headliner. I thought you were telling me that these were powered speakers and the amps were hidden in the cab. Quote Link to comment https://www.bigmacktrucks.com/topic/23840-help-me-troubleshoot-my-stereo/#findComment-107332 Share on other sites More sharing options...
xdudebrahx Posted March 14, 2012 Author Share Posted March 14, 2012 The last head unit did the exact same thing. Quote Link to comment https://www.bigmacktrucks.com/topic/23840-help-me-troubleshoot-my-stereo/#findComment-107333 Share on other sites More sharing options...
ducky698 Posted March 16, 2012 Share Posted March 16, 2012 Hi. after market head unit last time? bet the speakers are 8 ohm speakers and your head unit it 4 ohms?pop a speaker out and read the back of it.Grant Quote Link to comment https://www.bigmacktrucks.com/topic/23840-help-me-troubleshoot-my-stereo/#findComment-107767 Share on other sites More sharing options...
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