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Thread: Radio issue/ makes no sense

  1. #1
    Join Date
    Nov 2014
    Location
    Nevada
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    109
    My Cars
    89 750iL 6 Speed

    Radio issue/ makes no sense

    Hello, my oem radio is having an issue where it keeps changing volume and cutting out. I have checked amp, and checked all fuses. I recently inspected wires and didn’t find any rips or tears. I noticed I’m missing the rear speakers but not sure if that could affect the radio as a whole. There are times where it plays perfect but it is usually interrupted by changing volumes and poor connection before disappearing all together. Radio station has no affect on it. Any ideas? I’m very lost on this one.

  2. #2
    Join Date
    Oct 2007
    Location
    Boca Raton, Florida
    Posts
    1,558
    My Cars
    89'750iL,98'740iL,00'M5
    Is it the OEM radio? Does it change when you move the volume knob? Does it happen when turning or braking?

    BMW 7er Website www.7er.com
    1989 BMW 735i Schwarz (sadly, sold) // 1989 BMW 750iL Cirrusblau Metallic // 1998 BMW 740iL Oxfordgrün Metallic // 2000 M5 Carbon Schwarz ///

  3. #3
    Join Date
    Nov 2014
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    Nevada
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    109
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    89 750iL 6 Speed
    Quote Originally Posted by SergeBMW View Post
    Is it the OEM radio? Does it change when you move the volume knob? Does it happen when turning or braking?
    It’s a used oem radio I purchased off of eBay, speed and cornering movement seems to have no effect. Strangely the problem seems to be fixing its self and the volume only fluctuates every once in a while now.

  4. #4
    Join Date
    Oct 2007
    Location
    Boca Raton, Florida
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    89'750iL,98'740iL,00'M5
    Its most likely bad wipers on the volume potentiometer. Mine was getting progressively worse until it just started popping and crackling the speakers and also cause them to sound erratic with volume. A quick fix for this is to remove the radio, open the top or remove the knob and spray an electrical cleaner inside the POT, one that wont damage plastic of course.

    It is only a temp fix. Not sure of its value or design, but it may be easy to find a replacement potetiometer for it.

    BMW 7er Website www.7er.com
    1989 BMW 735i Schwarz (sadly, sold) // 1989 BMW 750iL Cirrusblau Metallic // 1998 BMW 740iL Oxfordgrün Metallic // 2000 M5 Carbon Schwarz ///

  5. #5
    Join Date
    Nov 2014
    Location
    Nevada
    Posts
    109
    My Cars
    89 750iL 6 Speed
    Quote Originally Posted by SergeBMW View Post
    Its most likely bad wipers on the volume potentiometer. Mine was getting progressively worse until it just started popping and crackling the speakers and also cause them to sound erratic with volume. A quick fix for this is to remove the radio, open the top or remove the knob and spray an electrical cleaner inside the POT, one that wont damage plastic of course.

    It is only a temp fix. Not sure of its value or design, but it may be easy to find a replacement potetiometer for it.
    Thanks! I’ll look into that.

  6. #6
    Join Date
    Nov 2014
    Location
    Nevada
    Posts
    109
    My Cars
    89 750iL 6 Speed
    Update: The issue seems to be worse in the cold. Something may be wrong with head unit all together so i'm exchanging it and will test a new one shortly.

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