hi everyone,
i recently bought a 2000 tj manual exec. it had a stock headunit in it the would only work when it felt like it SO i went out and bought a pioneer 7750 (i think :confused: sumthing around that).

basically the new stereo has the same problem. one minute i have sound then i have no sound. at first i thought the head unit was powering off, its not. the song continues to play i can change tracks and i can even change to radio. however i get no sound. so my question to you is what would make your car audio have no sound one minute and sound the next.

also my trip computer was working fine until my bf did sumthing under the hood so how do i reset that?

thanks heaps to anyone that can help as its starting to annoy me

That's certainly an interesting issue which could be caused (assuming the deck is wired correctly) by a great deal of things. First things first:

1. Are you sure the deck is wired correctly (i.e. no negative connected to dimmers etc)?
2. Are speakers' voice coils all still intact (i.e. are they measuring the correct resistance)?
3. Is the internal fuse of the 7750 still intact?

Failing that, are you in NSW perchance? I'm more than happy to check it over and diagnose it.:)

they are saying that it is wired up correctly.
voice coils are still fine
fuse is/would be fine

it worked fine when installed the car they left my car on accessories for an hour( i just found this out could it be the battery?) so it worked. i drove it to work and it was fine not a problem (45min trip). got in car on my lunch break after it sat there for 5 hours and it powered on fine everything fine i can adjust everything but i have no sound. get food start car its working:nuts: pull into car park and it stops working. didnt work for 4 hours again. now its working most the time. however my rear stock speakers are making cracking noises even when stereo is on quietly.

bump:(

hi everyone,
also my trip computer was working fine until my bf did sumthing under the hood so how do i reset that?


When you say the trip computer isn't working, are you referring to the one at the top of the dash that cycles through your fuel consumption, average speed, l'100km, etc?

Is it currently showing something like 3:0 or 3:5 on the screen? Or perhaps S or W? If so, you need to set the ECU again to tell it if you have a 3 or 3.5L and if your a Sedan or Wagon.

For your sound, could be one of the looms/connections. When you remove the centre console there are a number of connections below the console where the HU lives. If you check the service manual for the model, you'll probs find the speaker wire goes through a number of connections and looms before it gets to the speakers. One of these could be loose.

Given you get static nosies from the rear, I'm assuming either lose connection somewhere or a short.

What work did they do under the bonnet? Was this to draw a new +12V for the HU? They could have bumped something there also.

okay well when i get home ill get them to have a look. could it be battery related? like maybe the battery isnt powerful enough or is going flat im a girl thats my only idea. im hoping for sumthing cheap and easy :pray:

trip computer is now working i figured the out awhile ago. still have other problem

okay well when i get home ill get them to have a look. could it be battery related? like maybe the battery isnt powerful enough or is going flat im a girl thats my only idea. im hoping for sumthing cheap and easy :pray:

So long as your car starts, and it stays running for over 30 mins, your pretty safe that it's not a battery or alternator.

If it was battery or alt, when the stereo died - so would everything else!

Given it stays on and there's no audio, and crackle at low volume, it's gotta be related to wiring (some wrong connection/join, loose connection or loom, short, etc).

When it is working, try adjusting the balance and fader in turn so you isolate the system to 1 speaker at a time. If you say have it on front full and left full, and you can hear static, or some volume from the right hand speaker, there's probably a wiring problem.

check the wires going into the rear speakers.. open the boot, stick your head in and check the wires.. it's not uncommon for a shopping bag or box to have crushed up against the wires and caused them to short on the speaker body! if thats the case, just gently reposition the metal tabs trying not to break them! if they are in fact touching the steel body, then you would get no sound from the audio unit!

:stoopid:

mine was cutting in and out all the time. it would work fine then randomly start squeling and speakers would cut in and out. it was from having the esky in the boot. it had smashed against the terminal and bent/moved it. when i bent it back all good.


Tim

are u shure you have earthed the h/u propley to the body of the car ect that would make it drop in and out

okay well i took my car to the dealer today they had it for 4 hours. AND THEY CANT FIND WHATS WRONG! yes thats right head unit is installed ifne no problem there and they told me the speakers arnt the problem. then they said they want it for another whole day. basically when i tried to ask questions they brushed my off im thinkn its cause im a girl :(

anyways wondering if anyone has any ideas what else it could be as my speakers are no longer playing music at all

When I worked at West side car audio I had a problem like this.

It was the fuse in the end.

Check all speaker wires for any damage.
Check deck is fitted correctly and the wiring is correct.
ask if they can swap the deck incase for some freak reason its that.

its not the deck cause the stock one did the same thing. thinking it was the deck i replaced it turns out it wasnt. i have checked the fuses (there seem to be 3 audio ones sum under the hood) speakers got tested and they are saying that they are fine :S so im at a lost as to wat it could be that mitsubishi themselves cant even find the problem :@ rather annoyed actually

hmmm i would say your wires that power the speakers are shorting out some wer

k if the hu doesnt turn off, the speakers are ok, and your getting no sound then it IS a short circuit to the speakers themselves, or by some freak coincidence the new hu. I dont think it is the wires themselves because it would be rather rare for all speakers to turn off, but rather the connection that was made when installing the hu, as this could well be the fault of the installer, if it happened to your stock one it might it got shaken around enough to cause this.

When u installed the new hu did it do this no sound thing right from go, or did it eventually start.

Or have u tried other cd's, might be the head unit says its reading it but having trouble, and cuts back in when it starts reading fine again.

Just some thoughts

dave :D

it had the problem right from the get go. i have changed th cds and i know its not that cause it WAS playing them fine when it wanted to work :doubt: but last couple of days ive had no sound at all. well its booked in all day wednesday sumhow i need to get car there (stupid bfs not knowing how to drive manual:doubt: ). If they cant find the problem then im just gonna rip EVERYTHING out and have nuttin cause its starting to REALLY annoy me

it had the problem right from the get go. i have changed th cds and i know its not that cause it WAS playing them fine when it wanted to work :doubt: but last couple of days ive had no sound at all. well its booked in all day wednesday sumhow i need to get car there (stupid bfs not knowing how to drive manual:doubt: ). If they cant find the problem then im just gonna rip EVERYTHING out and have nuttin cause its starting to REALLY annoy me


Same as the speaker wires shorting out in the boot thing - has anyone actually, physically checked the speakers in the doors? Maybe a pinched wire or loose plug there.....

it had the problem right from the get go. i have changed th cds and i know its not that cause it WAS playing them fine when it wanted to work :doubt: but last couple of days ive had no sound at all. well its booked in all day wednesday sumhow i need to get car there (stupid bfs not knowing how to drive manual:doubt: ). If they cant find the problem then im just gonna rip EVERYTHING out and have nuttin cause its starting to REALLY annoy me

ok i think i got it, replace the ENITIRE speaker wires, as im guessing these would be the same wires used before the hu change,

if this is the case its rather simple to rewire, just buy some wire long enough to replace all speaker wires and strong enough to take the power, this way u just get them put in, shouldnt cost more than $10 depending on where u get it. i got mine from dick smiths lol . If u have the manual for your car i could come round and rewire all the speakers for u if your in northern suburbs of adelaide, no charge. :D

Dave

okay took my car into mitsu to get looked at i need sum help here cause i dont understand.

i have sumhow managed to short my internal amp inside my headunit ( IN 2 DECKS!) and they are telling me they have checked the speakers and the wires and they are all fine like what the hell else could cause this? need to know everyones thoughts asap as they want both my decks to send off for testn

also my new deck was a demo in the store so i know it did work as i had heard it a few times b4 buying also how do i get 2 decks ( first one is stock) to both blow amps without there being an existing prob in the car.

sorry bout grammer very tired very very very angry

okay took my car into mitsu to get looked at i need sum help here cause i dont understand.

i have sumhow managed to short my internal amp inside my headunit ( IN 2 DECKS!) and they are telling me they have checked the speakers and the wires and they are all fine like what the hell else could cause this? need to know everyones thoughts asap as they want both my decks to send off for testn

also my new deck was a demo in the store so i know it did work as i had heard it a few times b4 buying also how do i get 2 decks ( first one is stock) to both blow amps without there being an existing prob in the car.

sorry bout grammer very tired very very very angry

check the voltage on the power wire, could be that your battery overcharges and sends more than 12v to the head units and maybe its more than the hu's can handle, mate your cars ****ing weird :nuts: , at least you know its special :confused:

all the voltage stuff coming out of the headunit is what it should be. a friend had a look with a mulitimetre. i have the worse luck with cars :( head unit is currently on way to sydney to get looked at should know thursday whats wrong with it.....should:doubt:

Hey this sounds familiar. MY 2002 TJ is doing the exact same thing, it has the stock cd player init, a mitsi/clarion. Sometimes it goes and other times it won't, the display still works and you can change the volume and nothing happens.
I thought it was the stock cd unit playing up, I have just finished fitting another unit( 5 mins ago!), a cheapy sony cd player and I hope it doesn't start doing the same. I will be interested to hear what it takes to fix your car as it sounds the same as mine. I was thinking that maybe something dodgy is happening with the inbuilt stereo protection in the stock units or the feature that allows it to run for an hour with the key off - because I have never been able to get mine to work like that.

good luck

Stephen

i will let u know cause mitsu r sayn that its not the car but can sumone really be unlucky enough to have 2 headunits blow the internal amp :doubt: ?

we shall c

So far so good, no probs yet. Been driving for about 30 min today and still got music. I don't think it can be the 'internal amps' in my case especially since the old stereo still goes, perfectly when it is working. Normally when something blows - it blows and it would be very unlikely to get two head units as in your case with intermittent amp failures. One thing I did do when I hooked my Sony was to fit the earth wire from the sony to one of the metal brackets that is in the dash. The original unit did not have a separate earth fixing so unsure what it was using, so maybe this has something to do with it. Will let you know if it starts playing up.