pumpkinboy1991
Member
Update below
Last edited:
pumpkinboy1991
Member
Ok doke, well I've cleaned up the connections anyway and will plug it in and hope that luck is on my side (for once! 
) and if that doesnt work I'll order a new one. Cheers guys
) and if that doesnt work I'll order a new one. Cheers guys
pumpkinboy1991
Member
Ooo I have sound - but still not right...
I cleaned up the connectors on the amp, cleaned the circuits inside the amp aswell, some little points of corrosion that may have contributed to the problem, and when I plugged it back in and stuck the key in the ignition and turned to position 1, the sat nav brings up the dsp option, and when I tried radio/cd etc the sound is absolutely perfect...
HOWEVER! when I take the key out the ignition, weird sound comes from the speakers. Firstly a sound which resembles something electronic jamming, followed by a pop (as if bass comes out of the speakers) and it repeats this sequence of sounds. "bbbrrrrr - POP" "brrrr -POP". It's as if strange signals are being sent to the speakers when the key isn't in the ignition? Anyone got any ideas?
I cleaned up the connectors on the amp, cleaned the circuits inside the amp aswell, some little points of corrosion that may have contributed to the problem, and when I plugged it back in and stuck the key in the ignition and turned to position 1, the sat nav brings up the dsp option, and when I tried radio/cd etc the sound is absolutely perfect...
HOWEVER! when I take the key out the ignition, weird sound comes from the speakers. Firstly a sound which resembles something electronic jamming, followed by a pop (as if bass comes out of the speakers) and it repeats this sequence of sounds. "bbbrrrrr - POP" "brrrr -POP". It's as if strange signals are being sent to the speakers when the key isn't in the ignition? Anyone got any ideas?
pumpkinboy1991
Member
UPDATE:
Had the amp connected up tonight, still with initial strange noises when ignition isnt turned past 0. As I turned the key from position 0 to 1 it made the speakers output a scratching noise (and a "pop"), like interference as I turned it - this makes me think... bad earth/dirty ignition switch contacts. Once at position 1 it was fine just as before. I drove the car to a friend's house which took about 20 mins - he is quite technically minded and I was trying to demonstrate the problem to him, however when I turned the ignition off/removed key, the problem didnt occur?? Which immediately made me think that perhaps the problem is looking more likely to do with the battery, as my train of thought would be that I had driven it for 20+ mins, therefore putting a little more life into the battery, and perhaps a low voltage was causing the amp to play up beforehand? So I locked the car, went inside with the amp still connected since it seemed to be fine, and when I went back out, unlocked and it was fine for about 20-30 seconds, then the noise came back again. Drove home, and once again took key out and again, the noise didnt come back. I have disconnected it tonight anyway so that I don't wake up to a dead car!! Can any electrical wizards confirm whether this looks more likely to be a battery related problem or a bad earth... or perhaps something totally different? I will do the battery test tomorrow and see how it holds up under a bit of electrical strain. Any advice would be fantastic.
Had the amp connected up tonight, still with initial strange noises when ignition isnt turned past 0. As I turned the key from position 0 to 1 it made the speakers output a scratching noise (and a "pop"), like interference as I turned it - this makes me think... bad earth/dirty ignition switch contacts. Once at position 1 it was fine just as before. I drove the car to a friend's house which took about 20 mins - he is quite technically minded and I was trying to demonstrate the problem to him, however when I turned the ignition off/removed key, the problem didnt occur?? Which immediately made me think that perhaps the problem is looking more likely to do with the battery, as my train of thought would be that I had driven it for 20+ mins, therefore putting a little more life into the battery, and perhaps a low voltage was causing the amp to play up beforehand? So I locked the car, went inside with the amp still connected since it seemed to be fine, and when I went back out, unlocked and it was fine for about 20-30 seconds, then the noise came back again. Drove home, and once again took key out and again, the noise didnt come back. I have disconnected it tonight anyway so that I don't wake up to a dead car!! Can any electrical wizards confirm whether this looks more likely to be a battery related problem or a bad earth... or perhaps something totally different? I will do the battery test tomorrow and see how it holds up under a bit of electrical strain. Any advice would be fantastic.
Datatek
Well-Known Member
Damp/corrosion in the electrical connectors caused strange noises from the speakers on my mates L322. It is very hard to get the connectors completely free of corrosion and verdigrease on the plastic in the connector causes leakage. Once the connectors were thoroughly dry and clean the problem stopped. Can't see it's likely to be the battery, lots of other things would play up.
pumpkinboy1991
Member
Yeah I assume the battery probably would cause other things to play up. Well I did try my best to completely clean the connectors, I filed the main corroded pins down and smothered the connectors in darathene, including the circuit boards inside the amp itself and allowed it to dry overnight and so I would have hoped that would get rid of any small bits I may have missed. Only other thing to try would be to do the same to the radio module and see if that perhaps has a dodgy connection causing drainage to the battery.
