Hey All,

Just tryed out my new system today, the headunit works great!! But none of the 4 speakers do, they wont make a sound, even with the volume full up!

Ive tried everything, ive checked all the wire, ive taken all the speakers out and checked them, made sure mute was off.... Now im just not sure what to do...

Any ideas would be great!

System:
Panasonic H/U
Panasonic Rear 6x9's
Kicker Front 3 way splits

AF

Is the head unit grounded properly?

yes, the headunit comes on ok, and ive checked the ground in a few differant spots

If its all wired up properly as you say then it must be a faulty headunit. Check your fuses?

Exactly what was done? Did u install it? How? Are the power wires correct? Have you checked this against the instructions. Did you plug in the speaker wires?

Have you installed stuff before? Are you deaf? (It's possible;))
Set fad and bal to 0. test it with a cd and with the radio.
Give us some more info mate...

peace

Tim

Ive checked fuses.

ok, this could be long.

there is 13 wires coming from the back of the h/u:
4 wires for the rear speakers
4 wires for the front speakers
1 wire for a motorised arial
1 wire for an amp
1 wire for constant 12V
1 wire for ACC
1 wire for Negative (Earth)

I connected all 8 speaker wires, checking polarity and making a good clean solder joint.
I ignored the arial and amp wires as i dont have a motorised arial or an amp
I connected the constant 12V to a wire under the dash that i know has 12V (this was done in the car previously)
I connected the ACC wire to the ACC wire from the previous headunit.
And i earthed the negative wire off on the firewall.

This is my first install, i followed the instructions to the letter, and no im not deaf :P
I have set Fade and Balance to 0 and this didnt help.
And i tested with both CD and Radio.....

Ok, now for some other info.

I checked the speakers with a 9V battery, all speakers are working.
Now for some strange reason, when i turn the key to ACC, all the power drops out, all the dash lights fade back, and the H/U wont turn on at all...

Someone seriously help me here, i have no ****en idea whats going on :S

u got the speakers on the right wires ?

Yep.... :rant:

Check ground again. If ur unit is powering down when it has a larger draw, eg running the cd or running the speakers it is prob ground related (or power related). Run a wire directly from your battery ground to the headunit ground.
Just a big long wire, extension lead etc... Doesnt have to be a pretty install atm. Just to check if this works.
Some units will turn on without a ground as they will have sufficient ground through the body or through the speaker wires/rca cables etc. this can be enough for lights to turn on but not enough for larger current draw

Did u sand back your ground point to bare metal?

If this is the problem find a better ground position, ensure it makes good contact.

The whole power backs off whe nthe KEY is turned, not when the unit is even turned on....

No, i didnt sand my ground back, i will tmrw though.

try not grounding the head unit

dunno what this will do, ground is just a safety feature on most h/u anyway u dont really need it...

um other then that, take the head unit back to where u bought it..

You will need your ground. Otherwise the unit will ground itself through other wires or the case. RCA connections for instance are not designed to handle those types of loads. And you can burn out your rca connections.

In a DC system you will definetly need your ground. In fact it is the most important lead there in terms of protecting your equipment.

Good luck, I'm pretty sure this is your problem.

Peace

Tim

Thanks for that, ill have a look tmrw, i also have another idea to investigate, thanks to Samurai for that ;)

Gerard, ground is required by any electrical circuit! Don't get earth and ground mixed up, they are two completely different things. In our case, ground is negative from the battery, and ground is required to complete a circuit!

Now when you say when you turn the key to Accessories, and the radio shuts down, then how do you turn it on? Without the key (or with the key in the OFF position) ????

Oh and what did you do with the dimmer wire (becomes positive when the headlights are on) from the vehicle's wiring harness??

If you are sure the wiring is all correct, its probably a faulty head unit with a dead output stage (aka, the amplifier)

err u havent got the 5V and the 12v wires mixed up?
IE the 5V acc wire to the 12V hu wire
and the 12V wire to the 5V memory wire

orrr the 12V HU wire to the dash lights wire

What 5volt wire? Cars are 12v systems.
The accessories wire is still 12 volt. It is live when the key is in the accessories position.

The memory wire is the main power wire for the unit. It is hooked up to the battery constantly.

opps yeah i forgot sorry

try not grounding the head unit

dunno what this will do, ground is just a safety feature on most h/u anyway u dont really need it...

um other then that, take the head unit back to where u bought it..

HAHA do you know how funny it is seeing a HU not grounded. I was testing mine without a ground and you'd push a button and it would do something else, and then it would play random bits of songs and jump all over the cd, was pretty damn funny for 5 minutes til i actually wanted it to stop LOL.

Ive checked fuses.



Ok, now for some other info.

I checked the speakers with a 9V battery, all speakers are working.
Now for some strange reason, when i turn the key to ACC, all the power drops out, all the dash lights fade back, and the H/U wont turn on at all...

Someone seriously help me here, i have no ****en idea whats going on :S

Maybe get a bigger battery , maybe your current battery can't take the load thats probaly why its dimming out.

Yeh could be the battery, thats why when the car is on it doesn't do it cuz the alternator kicks in and takes over. Trying hooking it up to an independant battery. Also make sure you are using the right fuse, when i first had my stereo i had a 5 amp fuse in a for a 10 amp HU, so whenever i put the volume over 50% the fuse blew which i had to go in and pull it all out again :P. Also check your ground with a multimeter, you have to scratch/sand away any paint or dirt that may be on the ground, otherwise you could be getting a dodgy ground.
Just remembered another thing, make sure none of your power wires are exposed and may be touching grounds/metal. This will dim lights and may even short out some electrical systems.

I doubt its the battery, otherwise after the engine started you would be able to hear music, as the alternator provides plenty. But there is no music whatsoever from the speakers

If the battery has enough juice to kick over the starter it will have enough to power a h/u. Check the voltage across it, even if it drops down below 12 it should have enough juice to at least get some music happening.

Wont be a fuse problem, but could be a wire shorting out somewhere. Either speaker terminal solder, or loose power wire etc...

My bet is it's something simple.

I checked the speakers with a 9V battery, all speakers are working.
Now for some strange reason, when i turn the key to ACC, all the power drops out, all the dash lights fade back, and the H/U wont turn on at all...

Someone seriously help me here, i have no ****en idea whats going on :S

that doesnt sound right at all just check the battury and make sure its not flat
with the earth wire my headunit gets 3 earths 1.threw the earth wire 2. threw the areal 3.threw the metal case of the headunit its self so make sure you got it screwed in nicely and got the areal plug in
as for the the speakers just go threw the manual(yes i know that sounds weird :P) and make sure theres not a gain on the speaker terminals on the headunit and read threw the troubleshooting
if worse comes to worse just unplug it and take it back and tell them the problem and depending on the people they can test it there if they got the setup there for it

Guys....he has no engine at all....just a battery. Could be a dodgey battery, but he's swapped it over with another one and its still got the problem. Both batteries are dodgey?! :P

I still think its the wiring AF....by the time this is finished, it would probably be something simple, so if u please excuse me, i will prepare to stab myself with a pen :doubt:

Check all speaker wire that none is exposed and no speaker wire parts (including clamps and metal clips) are touching the chasis, this will stop your hole hu from producing sound.