P38A Radio buzz

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domino

domino

Well-Known Member
Posts
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Location
Edinburgh
Haven't been able to find this on the forum.

After my previous posts re drying things out (and everything I took out), the radio now has a permanent buzz. Even if its sitting waiting for the code to be entered, it sits there buzzing away. If I only have the grey connector plugged in, its quiet. If I plug in the brown connector, is considerably louder. I've checked the plugs themselves and they're all good.

Uploading a video to YouTube to demonstrate it but until then, any suggestions on what the issue might be? I have the Alpine unit.

 
The buzzing matey, the buzzing...
download.jpeg :p;)
 
I bought a box of solder bullet connectors that have marine grade resin to seal them.

Really not looking forward to that job and the resulting back ache.
 
I cured the leak into the pollen filter box with a lid that went under the metalwork. It'll never leak again and hasn't :D. You won't need the resin if it never leaks. ;)
 
before you go reworking the white connector, try buying a couple of second hand door amps (of the correct part number for your car).

I got the same advice about the white connector, redid that, no improvement (even though the old connector had gangrene). It wasn't until i switched the door amp months later that the problem disappeared completely. The old door amp looks/ looked pristine, and there was no sign of damp... so presumably there was a dodgy solder joint or something
 
romanrob said:
before you go reworking the white connector, try buying a couple of second hand door amps (of the correct part number for your car).

I got the same advice about the white connector, redid that, no improvement (even though the old connector had gangrene). It wasn't until i switched the door amp months later that the problem disappeared completely. The old door amp looks/ looked pristine, and there was no sign of damp... so presumably there was a dodgy solder joint or something
Click to expand...

I guess my 'beef' with that is that everything was fine before I stripped the carpets etc out. Of course, that doesn't mean something hasn't gone wrong in the meantime.

It is, after all, a P38.
 
romanrob said:
before you go reworking the white connector, try buying a couple of second hand door amps (of the correct part number for your car).

I got the same advice about the white connector, redid that, no improvement (even though the old connector had gangrene). It wasn't until i switched the door amp months later that the problem disappeared completely. The old door amp looks/ looked pristine, and there was no sign of damp... so presumably there was a dodgy solder joint or something
Click to expand...

The amps get balanced audio from the radio & earth via those connectors. Any one of the three wires is enough to cause buzzing.

If the connectors are green & corroded then best thing is to bypass them by soldering & heat-shrinking the wires. If the amps are bad, then re-soldering the PCB should help. Much cheaper the do the soldering first.
 
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