Complete Silence

Eniamaj · 08-12-2020, 04:22 AM

Greetings, need someone who's a literal Logic7 magician. I have a non idrive 2008 N54 335i and there is absolutely no sound coming from the sound system. Changed the AMP, tried the fiber optic loop, changed the radio to an Eonon. Nothing fixed the issue. What else can one do? Thanks in advance.[IMG][/IMG]

mecheng77 · 08-12-2020, 06:40 AM

Codes?

Eniamaj · 08-12-2020, 01:21 PM

Quote:

Originally Posted by mecheng77

Codes?

No codes whatsoever.

mecheng77 · 08-12-2020, 01:29 PM

I remember reading that there is a device that you can buy to check the fiber optic system

Eniamaj · 08-12-2020, 01:30 PM

Quote:

Originally Posted by mecheng77

I remember reading that there is a device that you can buy to check the fiber optic system

I've already done the loop test, still nothing

icon2015 · 08-12-2020, 04:37 PM

Please describe the loop test of the optic fiber you have done. Also, let us know what radio unit you have at this moment on the car. I assume that Eonon is a Chinese brand... I find it hard to believe that they know the data protocol that is transmitted over the BMW fiber optic system. Also, I assume that at some point you had sound in your car.

I suggest that you find an BMW independent service in your area and go there before changing parts to find an issue.

Eniamaj · 08-12-2020, 04:43 PM

Quote:

Originally Posted by icon2015

Please describe the loop test of the optic fiber you have done. Also, let us know what radio unit you have at this moment on the car. I assume that Eonon is a Chinese brand... I find it hard to believe that they know the data protocol that is transmitted over the BMW fiber optic system. Also, I assume that at some point you had sound in your car.

I suggest that you find an BMW independent service in your area and go there before changing parts to find an issue.

I do habe the Eonon unit as well as the fiber optic ballast but the sound has been out the car since I've had it. When I discovered the no audio I brought it to the bmw dealership and the diagnosed that the stock radio was done so I got another stock radio and tested it and same results, that's when I thought it was the logic 7 amp so I got another one and tried it, still no audio, so I bought the fiber optic loop and tried it throughout the entire loop points of the fiber optic points. This is non idrive so there is no navigation module, just Bluetooth and phone modules. Then I tried the fiber optic fitting by the amp as well as the isolated fiber optic connectors in the car. None worked.

icon2015 · 08-12-2020, 05:02 PM

So you have a Chinese radio with an most emulator (for L7), which I didn't knew exists, and I still find it hard to believe. You should have left the BMW dealership manage the repair. Almost any new radio (and by new I mean new to the car) should be coded for the car options. Perhaps if the new radio you have tested had been coded it would have worked.

To properly check the fiber optic you should just remove one by one each fiber optic connector in the car with the ignition on position 1 and check if you have one of the pins lighted in red in each connector. That test would tell you if all ecus, and loops are working. If that is the case then probably your radio is the issue, and a new one(as I have mentioned above) properly coded will do the trick.

Good luck!

Eniamaj · 08-12-2020, 05:33 PM

Quote:

Originally Posted by icon2015

So you have a Chinese radio with an most emulator (for L7), which I didn't knew exists, and I still find it hard to believe. You should have left the BMW dealership manage the repair. Almost any new radio (and by new I mean new to the car) should be coded for the car options. Perhaps if the new radio you have tested had been coded it would have worked.

To properly check the fiber optic you should just remove one by one each fiber optic connector in the car with the ignition on position 1 and check if you have one of the pins lighted in red in each connector. That test would tell you if all ecus, and loops are working. If that is the case then probably your radio is the issue, and a new one(as I have mentioned above) properly coded will do the trick.

Good luck!

I've done the checks you mentioned, there is a light also here is the picture of the fiber optic decoder box for the Eonon head unit I have. The issue is not the new head unit because the issue existed with all factory stock parts.

Eniamaj · 08-12-2020, 05:35 PM

Quote:

Originally Posted by Eniamaj

Quote:

Originally Posted by icon2015

So you have a Chinese radio with an most emulator (for L7), which I didn't knew exists, and I still find it hard to believe. You should have left the BMW dealership manage the repair. Almost any new radio (and by new I mean new to the car) should be coded for the car options. Perhaps if the new radio you have tested had been coded it would have worked.

To properly check the fiber optic you should just remove one by one each fiber optic connector in the car with the ignition on position 1 and check if you have one of the pins lighted in red in each connector. That test would tell you if all ecus, and loops are working. If that is the case then probably your radio is the issue, and a new one(as I have mentioned above) properly coded will do the trick.

Good luck!

I've done the checks you mentioned, there is a light also here is the picture of the fiber optic decoder box for the Eonon head unit I have. The issue is not the new head unit because the issue existed with all factory stock parts.

Also, how do you "code a radio "?

icon2015 · 08-12-2020, 06:12 PM

You can code only original BMW ecus for your car with NCSexpert. There are many threads on this forum on this subject. Your Eonon probably has to be set to transmit the audio on AUX output. You will have to contact their support team for more info. When I said new radio, I was referring to new OEM radio.

Well, the issue existed with the stock parts, as you had or still have an issue. If the dealership told you that the radio was the issue, you can go from there.

Hoody007 · 08-12-2020, 08:13 PM

Couple of thoughts:

First, your original head unit was probably fine. I wouldn’t trust the BMW dealer at all, especially when it comes to an older model - they tend to know very little about older vehicles.

Have you checked the fiber optic loop on the underside of the dash? It’s a diagnostic connector for the MOST system and might be damaged. More info here: https://www.e90post.com/forums/showthread.php?t=347222

I’d try reinstalling the original head unit which came with your car, and checking the dash loop.

What MOST modules are installed in your car? Do you have SDARS (satellite radio)?

08-12-2020, 04:22 AM	#1
Eniamaj New Member 12 Rep 26 Posts Drives: 2007 BMW 328ci Join Date: Nov 2018 Location: 96876 iTrader: (0)	Complete Silence Greetings, need someone who's a literal Logic7 magician. I have a non idrive 2008 N54 335i and there is absolutely no sound coming from the sound system. Changed the AMP, tried the fiber optic loop, changed the radio to an Eonon. Nothing fixed the issue. What else can one do? Thanks in advance.[IMG][/IMG] Attached Images __________________ Yardy
	Appreciate 0 Tweet Quote

08-12-2020, 06:40 AM	#2
mecheng77 Colonel 1006 Rep 2,243 Posts Drives: 2007 328i / 2014 M235i Join Date: Nov 2017 Location: Ontario Canada iTrader: (0) Garage List [0.00] [0.00]	Codes?
	Appreciate 0 Quote

08-12-2020, 01:29 PM	#4
mecheng77 Colonel 1006 Rep 2,243 Posts Drives: 2007 328i / 2014 M235i Join Date: Nov 2017 Location: Ontario Canada iTrader: (0) Garage List [0.00] [0.00]	I remember reading that there is a device that you can buy to check the fiber optic system
	Appreciate 0 Quote

08-12-2020, 04:37 PM	#6
icon2015 Private First Class 21 Rep 126 Posts Drives: E92 320d ~200 bhp Join Date: Apr 2018 Location: Bucharest iTrader: (0)	Please describe the loop test of the optic fiber you have done. Also, let us know what radio unit you have at this moment on the car. I assume that Eonon is a Chinese brand... I find it hard to believe that they know the data protocol that is transmitted over the BMW fiber optic system. Also, I assume that at some point you had sound in your car. I suggest that you find an BMW independent service in your area and go there before changing parts to find an issue.
	Appreciate 0 Quote

08-12-2020, 05:02 PM	#8
icon2015 Private First Class 21 Rep 126 Posts Drives: E92 320d ~200 bhp Join Date: Apr 2018 Location: Bucharest iTrader: (0)	So you have a Chinese radio with an most emulator (for L7), which I didn't knew exists, and I still find it hard to believe. You should have left the BMW dealership manage the repair. Almost any new radio (and by new I mean new to the car) should be coded for the car options. Perhaps if the new radio you have tested had been coded it would have worked. To properly check the fiber optic you should just remove one by one each fiber optic connector in the car with the ignition on position 1 and check if you have one of the pins lighted in red in each connector. That test would tell you if all ecus, and loops are working. If that is the case then probably your radio is the issue, and a new one(as I have mentioned above) properly coded will do the trick. Good luck!
	Appreciate 0 Quote

08-12-2020, 06:12 PM	#11
icon2015 Private First Class 21 Rep 126 Posts Drives: E92 320d ~200 bhp Join Date: Apr 2018 Location: Bucharest iTrader: (0)	You can code only original BMW ecus for your car with NCSexpert. There are many threads on this forum on this subject. Your Eonon probably has to be set to transmit the audio on AUX output. You will have to contact their support team for more info. When I said new radio, I was referring to new OEM radio. Well, the issue existed with the stock parts, as you had or still have an issue. If the dealership told you that the radio was the issue, you can go from there.
	Appreciate 1 Eniamaj12.00 Quote

08-12-2020, 08:13 PM	#12
Hoody007 Major 1309 Rep 1,165 Posts Drives: 335i ZMZ LCI \| 850i/6 Join Date: Apr 2018 Location: Dunwoody, GA & Boston, MA iTrader: (0)	Couple of thoughts: First, your original head unit was probably fine. I wouldn’t trust the BMW dealer at all, especially when it comes to an older model - they tend to know very little about older vehicles. Have you checked the fiber optic loop on the underside of the dash? It’s a diagnostic connector for the MOST system and might be damaged. More info here: https://www.e90post.com/forums/showthread.php?t=347222 I’d try reinstalling the original head unit which came with your car, and checking the dash loop. What MOST modules are installed in your car? Do you have SDARS (satellite radio)?
	Appreciate 0 Quote