Can you help me troubleshoot this issue? - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 09-30-2008, 02:37 PM
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Can you help me troubleshoot this issue?

This is a new thread which I've started about a discussion in another thread.
Ive posted it in the M3 and this e36 forum.

Pre-requsite:
Owner of a 1999 M3 with a stock Top Hi/Fi Sound system (Harmon Kardon) with the CD Changer in the trunk. (or any other e36 with the same sound system)

What I require:
You to completely disconnect your CD changer in the trunk (all cables)

What Results am I looking for:
Let me know if your radio produces sound.

Why you should help me:
Because you love bimmers and it will answer a very simple question for me.

(Below is information from my other thread located here)

I checked out the radio and this is what Ive found out.

Note: I have the TOP HIFI sound system (or whatever its called)

1. The radio powers up and all buttons work.
2. I removed the radio and put it back in (security code works too
3. It finds and recognizes radio stations (shows their station identification letters)
4. Both FM and AM do not produce sound.
5. The CD Changer in the trunk is missing.
6. All the wires on the AMP in the trunk are plugged in.

So. I have a few questions.

1. If I suspect the AMP is defective, How would I go about testing it?
2. If the AMP is not defective, what should I test next?
3. Is there anyone in Vancouver BC with an M3 that I can meet up with and swap the AMP with to rule it out? (seriously, there's a case of beer in it for ya)
4. Will the sound system still function with the CD Changer removed? Ive heard several references to the system not producing any sound if one of the devices is disconnected.

Thanks for any help/assistance
z

1999 M3
Vancouver BC, Canada
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#2 (permalink) Old 10-01-2008, 12:19 AM
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Can you post a pic of your Top HIFI head unit? I am not sure what the Top HIFI unit is or looks like and my M3 doesn't have the stock head unit or CD changer in there any more so I can't grab you the part number to compare. If it is the same, perhaps I can help... if not... hopefully some one else knows what it is.

I know that for the 2 E36's that I have had 95 318i and 95 M3 and the 1995ish 540i and the 1996 525i that a friend of mine has (which all have the same head unit but different CD changer/changer cable for the >95 and <95) that the head unit does work with the changer unplugged.

So based on my theory of maybe. Can you remove your head unit. Pull the bus connector out and look in there for other disconnected wiring. You may have to reach kind far in there, but grab a flash light and feel gently. Perhaps a previous owner changed the head unit to an aftermarket one and then put the stock head unit back. For some head units you have to rewire the car. Just a thought.
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#3 (permalink) Old 10-01-2008, 01:13 AM
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well, during further investigation(I just finished putting everything back together about 10mins ago), I've determined that the stock Amp is a non functional unit.

I plugged a speaker directly into the back of the deck and there was sound.

I then checked the voltages of the Amp and found that there was +12v on both the Power and Remote Power leads. The ground was fine too. So I'm in the market for a used HK-Amp, or possibly some pointers on what $ I'm looking to spend to get a replacement speaker/amp setup.

Thanks for the post tho
z

1999 M3
Vancouver BC, Canada
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#4 (permalink) Old 10-07-2008, 01:05 PM
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I found an amp at the wreckers from a '95.

It wasn't the HK unit but it works just the same. Cost me $50

might be a bit on the expensive side for a wrecker pull but hey, this is Vancouver BC. Where the wreckers try to get about 1/2 List for their junker parts.

anyways, I've got radio now so I'm happy

Later
z

1999 M3
Vancouver BC, Canada
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