Radio sound dead

[bob91343]

I have a 1994 E34 530i with trunk mounted CD changer and I get no audio. It's intermittent. But all channels cut in and out at once so I don't suspect power amplifier. Is there a source for schematic diagram of this?

[632 Regal]

I have a 1994 E34 530i with trunk mounted CD changer and I get no audio. It's intermittent. But all channels cut in and out at once so I don't suspect power amplifier. Is there a source for schematic diagram of this?

Only with the CD player?

Bob, I just experienced the audio cutting off and on again. Noticed while hitting a bump with 10 12 foot deck boards the audio popped off and on and then off. Wait a while and it's good.

Today I decided to pull the amp and spray it with deoxit, exercise the connectors and put it back. This still would not turn on although the radio was on, lights etc.

Pulled the trunk coverings back out and when messing with the wires it would come and go. The wires going to the forward connection are the culprit for me. Pulled the amp again and found it is some intermittent connection in a location unknown to the forward most connection. Jammed the cables so it worked and tightened the amp back down. The wire cable is tight in a working position so I am hoping this is a permanent solution.

Sorry vague man but this is what I did.

[bob91343]

[QUOTE=632 Regal;350077]Only with the CD player?

Bob, I just experienced the audio cutting off and on again. Noticed while hitting a bump with 10 12 foot deck boards the audio popped off and on and then off. Wait a while and it's good.

Today I decided to pull the amp and spray it with deoxit, exercise the connectors and put it back. This still would not turn on although the radio was on, lights etc.

Pulled the trunk coverings back out and when messing with the wires it would come and go. The wires going to the forward connection are the culprit for me. Pulled the amp again and found it is some intermittent connection in a location unknown to the forward most connection. Jammed the cables so it worked and tightened the amp back down. The wire cable is tight in a working position so I am hoping this is a permanent solution.

Thanks for the reply! Maybe I should look in the trunk. I have the radio partly out but haven't been able to unplug it. No amount of wiggling or tapping at the dash has any effect. All audio channels disappear at once and sometimes return. I didn't think there was a trunk amplifier but maybe there is. I will look, and thanks for the suggestion.

Bob

[bob91343]

I looked in the trunk and there does seem to be an amplifier in there, bolted to the underside of the rear window shelf. So my next step will be to remove the amplifier and see if I can get inside it. If I can, then I will see if the problem is within.

[632 Regal]

I looked in the trunk and there does seem to be an amplifier in there, bolted to the underside of the rear window shelf. So my next step will be to remove the amplifier and see if I can get inside it. If I can, then I will see if the problem is within.

Not under the window shelf, on left side of trunk under the insulation stuff. Under the window is CD changer and some old style phone modulator stuff.

[bob91343]

John you may be right. I am aware of the CD changer but didn't know what the other box is supposed to do. In any case, I will look into it to find out what it actually is. I am still plagued by the intermittent radio operation. Shaking and banging on the radio itself has no effect so I decided to look in the trunk.

Any advice to solve this problem is welcome. Replacing the radio seems not to be an option, as there is nothing I can buy that would replace its function, assuming the problem is within the radio. I want the AM and FM and CD functions but they are no longer available. Maybe a junkyard, at an exorbitant price. And I am unsure if that will fix it.

[632 Regal]

John you may be right. I am aware of the CD changer but didn't know what the other box is supposed to do. In any case, I will look into it to find out what it actually is. I am still plagued by the intermittent radio operation. Shaking and banging on the radio itself has no effect so I decided to look in the trunk.

Any advice to solve this problem is welcome. Replacing the radio seems not to be an option, as there is nothing I can buy that would replace its function, assuming the problem is within the radio. I want the AM and FM and CD functions but they are no longer available. Maybe a junkyard, at an exorbitant price. And I am unsure if that will fix it.

Mine is doing it again, it's the smaller wad of wires going to the front end of the amp. Going to see if I can find which wire turns it on and fix it. I'll post a picture of where the amp is for you. There are 3 phillips screws holding the gold plate on. If I turn the radio on when I get no sound and wiggle the one going to the forward connector it will turn on sometimes.