I have a rockford fosgate rfx9000 cd/mp3 player. Recently the main
outputs stopped working for a few minutes (the speakers driven by the
fosgate's amp totally quit, the sub's fed by line out still worked). I
turned the radio off/on and it worked. A few days later the same thing
happened, and now it won't come on at all. There is no crackling, no
sound at all. The unit is still on - the lights work, the CD moves
from song to song, just no sound. Radio or CD, no difference.

I put the factory radio back in and it plays ok so I don't _think_ I
have a speaker wiring problem. I was not playing the unit loud at the
time and it is rarely pushed.

Any suggestions for places to look? I don't mind cracking it open if
there's a reasonable chance of success. I don't have much to lose
since it doesn't work now.

Thanks,

Terry

It probably *IS* a speaker or wiring problem. If you have a blown or
partially blown speaker the HU will see the short and turn off the internal
amp. The factory HU not having a protection circuit will play through a
dead short and do nothing but get hotter.


Paul Vina



wrote in message
...

I have a rockford fosgate rfx9000 cd/mp3 player. Recently the main
outputs stopped working for a few minutes (the speakers driven by the
fosgate's amp totally quit, the sub's fed by line out still worked). I
turned the radio off/on and it worked. A few days later the same thing
happened, and now it won't come on at all. There is no crackling, no
sound at all. The unit is still on - the lights work, the CD moves
from song to song, just no sound. Radio or CD, no difference.

I put the factory radio back in and it plays ok so I don't _think_ I
have a speaker wiring problem. I was not playing the unit loud at the
time and it is rarely pushed.

Any suggestions for places to look? I don't mind cracking it open if
there's a reasonable chance of success. I don't have much to lose
since it doesn't work now.

Thanks,

Terry

Now that you mention it the back of the HU was very hot, too hot to touch. I
thought that was odd but didn't know how hot it is supposed to be. I also
didn't know a speaker could fail and shut down the amp.

Is this circuit protection based on heat or something that senses a short
and turns off before getting hot? At the moment it doesn't work even right
after it is turned on.

I'll check speaker wiring and maybe disconnect some of the speakers to try
to pinpoint the problem. I don't know a lot about audio - are there any
other diagnostic techniques to try? Would a amp meter inline with each
speaker identify a bad wire/speaker?

Thanks for the tip,

Terry

"Paul Vina" wrote in message
news:aFnmb.21883$Fm2.10043@attbi_s04...
It probably *IS* a speaker or wiring problem. If you have a blown or
partially blown speaker the HU will see the short and turn off the
internal
amp. The factory HU not having a protection circuit will play through a
dead short and do nothing but get hotter.


Paul Vina



wrote in message
...

I have a rockford fosgate rfx9000 cd/mp3 player. Recently the main
outputs stopped working for a few minutes (the speakers driven by the
fosgate's amp totally quit, the sub's fed by line out still worked). I
turned the radio off/on and it worked. A few days later the same thing
happened, and now it won't come on at all. There is no crackling, no
sound at all. The unit is still on - the lights work, the CD moves
from song to song, just no sound. Radio or CD, no difference.

I put the factory radio back in and it plays ok so I don't _think_ I
have a speaker wiring problem. I was not playing the unit loud at the
time and it is rarely pushed.

Any suggestions for places to look? I don't mind cracking it open if
there's a reasonable chance of success. I don't have much to lose
since it doesn't work now.

Thanks,

Terry

Now that you mention it the back of the HU was very hot, too hot to touch. I
thought that was odd but didn't know how hot it is supposed to be. I also
didn't know a speaker could fail and shut down the amp.

Is this circuit protection based on heat or something that senses a short
and turns off before getting hot? At the moment it doesn't work even right
after it is turned on.

I'll check speaker wiring and maybe disconnect some of the speakers to try
to pinpoint the problem. I don't know a lot about audio - are there any
other diagnostic techniques to try? Would a amp meter inline with each
speaker identify a bad wire/speaker?

Thanks for the tip,

Terry

"Paul Vina" wrote in message
news:aFnmb.21883$Fm2.10043@attbi_s04...
It probably *IS* a speaker or wiring problem. If you have a blown or
partially blown speaker the HU will see the short and turn off the
internal
amp. The factory HU not having a protection circuit will play through a
dead short and do nothing but get hotter.


Paul Vina



wrote in message
...

I have a rockford fosgate rfx9000 cd/mp3 player. Recently the main
outputs stopped working for a few minutes (the speakers driven by the
fosgate's amp totally quit, the sub's fed by line out still worked). I
turned the radio off/on and it worked. A few days later the same thing
happened, and now it won't come on at all. There is no crackling, no
sound at all. The unit is still on - the lights work, the CD moves
from song to song, just no sound. Radio or CD, no difference.

I put the factory radio back in and it plays ok so I don't _think_ I
have a speaker wiring problem. I was not playing the unit loud at the
time and it is rarely pushed.

Any suggestions for places to look? I don't mind cracking it open if
there's a reasonable chance of success. I don't have much to lose
since it doesn't work now.

Thanks,

Terry

Now that you mention it the back of the HU was very hot, too hot to touch. I
thought that was odd but didn't know how hot it is supposed to be. I also
didn't know a speaker could fail and shut down the amp.

Is this circuit protection based on heat or something that senses a short
and turns off before getting hot? At the moment it doesn't work even right
after it is turned on.

I'll check speaker wiring and maybe disconnect some of the speakers to try
to pinpoint the problem. I don't know a lot about audio - are there any
other diagnostic techniques to try? Would a amp meter inline with each
speaker identify a bad wire/speaker?

Thanks for the tip,

Terry

"Paul Vina" wrote in message
news:aFnmb.21883$Fm2.10043@attbi_s04...
It probably *IS* a speaker or wiring problem. If you have a blown or
partially blown speaker the HU will see the short and turn off the
internal
amp. The factory HU not having a protection circuit will play through a
dead short and do nothing but get hotter.


Paul Vina



wrote in message
...

I have a rockford fosgate rfx9000 cd/mp3 player. Recently the main
outputs stopped working for a few minutes (the speakers driven by the
fosgate's amp totally quit, the sub's fed by line out still worked). I
turned the radio off/on and it worked. A few days later the same thing
happened, and now it won't come on at all. There is no crackling, no
sound at all. The unit is still on - the lights work, the CD moves
from song to song, just no sound. Radio or CD, no difference.

I put the factory radio back in and it plays ok so I don't _think_ I
have a speaker wiring problem. I was not playing the unit loud at the
time and it is rarely pushed.

Any suggestions for places to look? I don't mind cracking it open if
there's a reasonable chance of success. I don't have much to lose
since it doesn't work now.

Thanks,

Terry

To find a bad speaker I would start with measuring the impedance. After
that disconnect all of them and connect a known good speaker and see if the
sound comes back. If not the HUs outputs could be dead. If it does work
reconnect each of the speakers in the car until the sound cuts out again,
that will be your bad speaker. Keep checking all of the speakers to make
sure you don't have more than one bad speaker.


Paul Vina



"sam" wrote in message
...
Now that you mention it the back of the HU was very hot, too hot to touch.
I
thought that was odd but didn't know how hot it is supposed to be. I also
didn't know a speaker could fail and shut down the amp.

Is this circuit protection based on heat or something that senses a short
and turns off before getting hot? At the moment it doesn't work even right
after it is turned on.

I'll check speaker wiring and maybe disconnect some of the speakers to try
to pinpoint the problem. I don't know a lot about audio - are there any
other diagnostic techniques to try? Would a amp meter inline with each
speaker identify a bad wire/speaker?

Thanks for the tip,

Terry

"Paul Vina" wrote in message
news:aFnmb.21883$Fm2.10043@attbi_s04...
It probably *IS* a speaker or wiring problem. If you have a blown or
partially blown speaker the HU will see the short and turn off the
internal
amp. The factory HU not having a protection circuit will play through a
dead short and do nothing but get hotter.


Paul Vina



wrote in message
...

I have a rockford fosgate rfx9000 cd/mp3 player. Recently the main
outputs stopped working for a few minutes (the speakers driven by the
fosgate's amp totally quit, the sub's fed by line out still worked). I
turned the radio off/on and it worked. A few days later the same thing
happened, and now it won't come on at all. There is no crackling, no
sound at all. The unit is still on - the lights work, the CD moves
from song to song, just no sound. Radio or CD, no difference.

I put the factory radio back in and it plays ok so I don't _think_ I
have a speaker wiring problem. I was not playing the unit loud at the
time and it is rarely pushed.

Any suggestions for places to look? I don't mind cracking it open if
there's a reasonable chance of success. I don't have much to lose
since it doesn't work now.

Thanks,

Terry