I have a sharp rs 1000av that everything works execpt the sound the speakers work fine on another system check the fuse in unit and it is fine

Could be bad connections on the speaker relay. You would have to be able to view the bottom of the board to check for these.

Start checking audio aoutput settings.

The fuses are on the power board at the bottom of the unit. Fuses 901, 902 and 903 are for the left, right and sub speakers. The service manual is here, remember to unplug it from the supply. Page 62 shows PWB C1. The speaker terminals was the answer to your original question.

http://diagramasde.com/diagramas/audio/Sharp%20CD-PC672.pdf

Alright i had a chance to look over things, this is how you are going to hook up the sub. first we'll be connecting the surround sound unit to the sub woofer.
surround sound unit sub woofer
left front: positive (+) <-----to------------->(+) left speaker level in
negative ( - )<- - -to- - - - - - ->( - ) left speaker level in

right front: positive (+) <-----to------------->(+) right speaker level in
negative ( - )<- - -to- - - - - - >( - ) right speaker level in

now that the surround sound unit is connected to the sub woofer you will need to connect the front surround sound speakers to the sub woofer.
sub woofer front surround sound speaker
left speaker level out (+)<-----to--------> (+) left front speaker
left speaker level out( - ) <- - - to- - - - ->( - ) left front speaker

right speaker level out (+)<-----to--------> (+) right front speaker
right speaker level out( - ) <- - - to- - - ->( - ) right front speaker

Alright now that the wires are all over the place and plugged in
turn everything on and see how it sounds. let me know if everything is working as it should. if you need help with anything else or if something does not seem right please feel free to contact me via e-mail or phone
Mark Woodring

check your fuse box and find which fuses go to your radio/audio system it may have a built in subwoofer and amp in the vehicle -check those out and hopefully it will solve it.good luck.

no such thing as in-line fuses for speakers. Check the main fuse from the head unit. Nothing still? Exchange it.

first you need the original remote to do this, with the set on use the remote to enter the following (menu) 8,2,7,0 this will bring up the options menu the first thing in this list is "Inital" and should already be highlighted then simply press enter on the remote, this should reset the tv

3. If your Nuvi has a FM transmitter, is it selected to "FM" or "Speaker"? The "FM" setting will mute the internal speaker. Setting it to "Speaker" will send sound to the speaker.

if this side of it works then the FM transmitter is faulty

Check that the sound has not been MUTED

plug the earphone into the socket to see if any sound is heard. The socket is also a switch that takes sound from internal speaker to ephone and reverse.
If no sound is hear in either FM or normal mode your unit is faulty and needs repair

If headphones work then so does the amplifier. When did this problem start? From what I can find it almost sounds like it thinks you have headphones plugged in, which would disable the speakers.

Hi Jake,

If you haven't done so already, I'd try double checking the speaker wiring, you may have some exposed or badly kinked wires behind the unit.

Cheers,

Matt Coyote