OEM radio has power, no sound...
Hi all,
This is my first post so don't mind my disclosure... :)
A few problems have popped up with my '91 525i so hours of searching about how to resolve the issues on the internet have brought me to this informative E34 community!
After searching these forums I still haven't found what coule be the issue with one problem I'm having with the oem radio. It powers on, I can operate all of its buttons, change radio stations, sound settings, etc. But the problem is there is no sound coming from the speakers.
At random times for a few seconds at a time I am able to hear music though. Sometimes it is preceded and/or followed by some cracking or popping. At first I was thinking that the speakers may need to be replaced, but when I am able to hear music it sounds perfectly fine.
Damaged/popped speakers wouldn't be able to produce normal sounding audio right?
What could be the problem?
I checked the fuse in the oem amp and it is fine. Are there any other fuses I need to check? Could it still be the speakers? Are there any common known areas where bad connections could cause this?
All help is appreciated!
EDIT: pictures of head unit and amp on page 2
my radio is from 1988 and still works
Just had a prob this summer, as we have very high humidity in the raining season (+ 95% humidity). It just got stuck and I could not change anything.
Removed the radio, brought it to the Sony headquarters here in Tokyo, which is right around the corner where I live. They could not find anything wrong.
Put it for some days in my fridge to get the moist out and it works again. Also dried it with a hair dryer.
:)
Moisture is a big prob for the connections.
Here are the PIN connections
click
Is it possible to know what radio system ....
are we talking about?.
I have a Babaria C Professional RDS (1992) and it is working fine. Some time ago I got issues with some speakers muting, and found poor contact inside the trunk amplifier/tuner unit (Becker brand). There is a motherboard inside with some boards connected to it; the connector is like some tiny gold plated wires, going into small holes in the motherboard. In one of the boards, the connections were causing the problem, as I kept the system operating, and when shaking that board, noticed the speaker going on and off. May be you’re having something similar. Some contact cleaner, and even a small soldering point can fix it.
Javier