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ingvaldsen

(SOLVED)Individual sound system not working

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hello

 

does anybody here know much about e39 and dsp ? atm my hifi dont work and i've tested with a working bm54 and navigationmodule. the bm54 has power and when im connecting the car with INPA i can only reach the widescreen monitor and videomodule.  previous owner says that the hifi have worked perfect several times this year so there has to be a small error, but i cant find out how and why.....

 

i have uploaded a video so you guys can se the problem, the car is a 2002 m5 with individual soundsystem

 

im desperate for help...

 

 

Edited by ingvaldsen

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Hi Ingvaldsen,

 

The E39 DSP amplifier units are known and increasingly so, to give up and stop working due to age and internal component fatigue. There's no car audio specialists that overhaul them either, so you'll need to find another known working unit and swap that in. If in the last few years there is a specialist somewhere that does overhaul and refurbish them, then perhaps someone knows who and where they are etc. If not, then any other unit 'might' also give up in the short, medium or longer term and you'll need to repeat this each time. All the other OEM modules also have various points of failure and where they can be resolved, a number of them are more expensive fixes and some are relatively cheap. Remember to find the DSP amplifier that is compatible with your build date of the car itself, some of the older DSP amplifiers won't work and others' can work if you do some coding changes to it, but overall, preferable to find a compatible one. Last one I had was sold 18 months or so ago, but was an older 'LEAR' version. Yours I think will be a Alpine or Becker unit, check the part number and revision number on the existing unit and search REALOEM for the same and perhaps other's that are compatible. 

 

Cheers, Dennis!

 

 

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55 minutes ago, DennisCooper said:

Hi Ingvaldsen,

 

The E39 DSP amplifier units are known and increasingly so, to give up and stop working due to age and internal component fatigue. There's no car audio specialists that overhaul them either, so you'll need to find another known working unit and swap that in. If in the last few years there is a specialist somewhere that does overhaul and refurbish them, then perhaps someone knows who and where they are etc. If not, then any other unit 'might' also give up in the short, medium or longer term and you'll need to repeat this each time. All the other OEM modules also have various points of failure and where they can be resolved, a number of them are more expensive fixes and some are relatively cheap. Remember to find the DSP amplifier that is compatible with your build date of the car itself, some of the older DSP amplifiers won't work and others' can work if you do some coding changes to it, but overall, preferable to find a compatible one. Last one I had was sold 18 months or so ago, but was an older 'LEAR' version. Yours I think will be a Alpine or Becker unit, check the part number and revision number on the existing unit and search REALOEM for the same and perhaps other's that are compatible. 

 

Cheers, Dennis!

 

 

so if the amp is defect it will affect the whole system like mine is now ?  i have a friend with 01 M5 with same hifi system, can i test with his amp or do i have to code it ? 

at the ETKA part cataloug the partnumber is the same for hifi proffesional dsp and individual sound system, is that true ? 

thanks for good answare, its a pain in the ass to have an expensiv car like this m5 and not have any sound.....

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Hi,

 

Some of the owners who have and prefer the OEM audio will perhaps know more, perhaps removing a fuse, leaving it out for a number of hours and ensuring it's re-seated correctly and re-trying the amp and also checking for continuity in the wiring looms etc. Once you've cross referenced your friends amplifier model and revision numbers to confirm it is compatible, swap it in and try. When you see other amplifiers listed for sale, do the same to see which ones are compatible. If you search the M5board, there's postings where owners have found the other amplifier variants and re-coded them to work in their cars and also, from units from the X5. I think you'll find the DSP amp is used in the Individual and HiFi professional setups., 

 

Lastly, keeping the OEM audio working is/going to be an expensive way of having sounds in your car. There's various modules, multiple points of failure for each and it's old technology now. For those who *must* keep it oem, then it's expenses that'll need to be covered as each failure happens. You could remove it all, put in a high quality head unit and then also amplifer/speakers and enjoy much better audio quality and the latest technologies. IF you need to sell the car, swap the OEM modules back in. 

 

Cheers, Dennis!

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I have now tried my bm54, navi and dsp amp in another m5 with dsp and everything work perfect... where should i start looking at problems? It gets power and everi other cable seems to provide correct power

 

 

 

 

159609FA-FF66-4102-A4EE-438695C26895.jpeg

Edited by ingvaldsen

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The problem is now solved! :D 

 

there was a bad connection on the i-bus wiring between the navi-screen and bm54... we found that out by taking avwire from the ibuspin from the 16/9 and taking it directly to the ibuspin on bm54 :) 

 

 

 

 

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