-_-_-_-_-_alt whine?

[Ericfg]

As a dealer/repair-type how easy is it to diagnose, and of course fix,
alternator whine?
I've got a bad case, and it has better and worse stages; some mornings
it seems to be a lot worse than others, and sometimes a few good
whacks on the dash by the h/u seems to knock it back 50%.

My sub amp died, and therefore the subs are out of the truck now. But
I miss the three digit SPL that I used to have. It was so nice to
blast a few good tunes at high level on the way home from a crappy day
at work.

I'm rambling......but I have two issues: the dead amp (which is up to
me) and the alt whine. If I can fix the latter easily I might fix the
former for a high price. If the latter's a money-pit I'd be stupid to
fix the former. Better to scrap it all and start over.

So, can alt whine be accurately and easily diagnosed?

[gamefixer]

On Sep 6, 7:19*pm, Ericfg > wrote:
> As a dealer/repair-type how easy is it to diagnose, and of course fix,
> alternator whine?
> I've got a bad case, and it has better and worse stages; some mornings
> it seems to be a lot worse than others, and sometimes a few good
> whacks on the dash by the h/u seems to knock it back 50%.
>
> My sub amp died, and therefore the subs are out of the truck now. *But
> I miss the three digit SPL that I used to have. *It was so nice to
> blast a few good tunes at high level on the way home from a crappy day
> at work.
>
> I'm rambling......but I have two issues: the dead amp (which is up to
> me) and the alt whine. *If I can fix the latter easily I might fix the
> former for a high price. *If the latter's a money-pit I'd be stupid to
> fix the former. *Better to scrap it all and start over.
>
> So, can alt whine be accurately and easily diagnosed?

If hitting the dash clears up the noise then you've got a bad ground
or an RCA cable thats shorting to the frame some where. It could also
be your head unit but I'd check the other things first.

Matt

[Ericfg]

>
> If hitting the dash clears up the noise then you've got a bad ground
> or an RCA cable thats shorting to the frame some where. It could also
> be your head unit but I'd check the other things first.
>

Thanks Matt. I have removed/fiddled with the h/u so many times and it
doesn't make much of a difference in the long run. I even grounded
the h/u seperately; that didn't do squat. :(

[gamefixer]

On Sep 9, 6:25*am, Ericfg > wrote:
> > If hitting the dash clears up the noise then you've got a bad ground
> > or an RCA cable thats shorting to the frame some where. It could also
> > be your head unit but I'd check the other things first.
>
> Thanks Matt. *I have removed/fiddled with the h/u so many times and it
> doesn't make much of a difference in the long run. *I even grounded
> the h/u seperately; that didn't do squat. :(

You might also want to check your RCA cables for a pinched wire or
something. Some times if the shield gets grounded you will get that
whine.

Matt

[Ender W]

"gamefixer" > wrote in message
...
On Sep 9, 6:25 am, Ericfg > wrote:
> > If hitting the dash clears up the noise then you've got a bad ground
> > or an RCA cable thats shorting to the frame some where. It could also
> > be your head unit but I'd check the other things first.
>
> Thanks Matt. I have removed/fiddled with the h/u so many times and it
> doesn't make much of a difference in the long run. I even grounded
> the h/u seperately; that didn't do squat. :(

You might also want to check your RCA cables for a pinched wire or
something. Some times if the shield gets grounded you will get that
whine.

Matt

You may also want to check the RCA inputs on the amp also
I have seen the jacks come loose where you lose the input ground and that
will cause intermittent whine

[Ericfg]

Thanks again Matt, I'll fool with it some today.

Is there a car audio forum somewhere that you recommend where I can
find similar help as opposed to this outdated usenet forum?

[gamefixer]

On Sep 13, 7:32*am, Ericfg > wrote:
> Thanks again Matt, I'll fool with it some today.
>
> Is there a car audio forum somewhere that you recommend where I can
> find similar help as opposed to this outdated usenet forum?

I honestly have no idea. I suppose you could find one by googling for
one. I did car stereo install almost 20 years ago so we didnt have
anything at all to work with.

Matt

[bob wald]

car stereo.com, then forum.