Display not working

Strange noises can come from your amplifier or the sub itself. The most likely cause of the strange noise is the speaker just before it dies! If you have been using the sub-woofer at high volume levels then you probably have damaged it. Try testing the sub-woofer using a multimeter(on ohms setting) it should give you a reading from 8 to 4 ohms. Sometimes they may give readings as low as 1 ohm. When testing the speaker/sub you should hear a soft scratchy, thumping or clicking sound. This indicates that the speaker may still be working. If you don't have a multimeter try a 1.5 volt battery (say a AA), DONT USE HIGHER VOLTAGE BATTERIES they may damage the speaker! You will hear a clicking, scratching etc sound from the speaker which may indicate that it is still OK. If the speaker seems OK the problem may be in the amplifier, which I suggest you bring to a professional repairer. When buying speakers and amplifiers make sure the power handling of the speaker is equal to or greater than the amplifier output power. This should stop speakers from getting damaged. Make sure the speaker and amplifier specifications are rated in the same manner ie RMS PMPO Peak. A 100 Watt PMPO speaker will not survive the output of a 100Watt RMS amplifier!

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IF ALL WIRES ARE CORRECTLY BEEN SETUP OR INSTALLED THEN THE NEXT STEP IS TO CONFIGURE THE SYSTEM TO WORK ON ALL SPEAKERS...

Before the setup of the speakers' channels

• Press the SURR. button on the remote to select multichannel surround mode before adjusting the speaker settings.
• In case of sound distortion, press and hold the SOUND button to select another transmission channel for the wireless rear speakers.

Setting Speakers' Channels

1. Press to stop playback, then press SYSTEM MENU.
2. Press repeatedly to select { Audio Setup Page }.
3. Press to highlight { Speaker Setup Page }, then press .
   
   
4. Enter its submenu by pressing .
5. Press to highlight one of the options below at a time, then press .
   
   
   • { Speakers Volume } – Volume level setting for individual speakers (-6dB – +6dB).
     
     
   • { Speakers Delay } – Delay times setting in relation to the listening position/ distance for centre and surround speakers.
     
     
6. Press to adjust to the setting that best suit your surround sound needs.
7. Press OK to confirm.

Notes:

• 1 ms increase/decrease of delay time is equivalent to 30 cm change in distance. Use the longer delay time settings when the rear speakers are closer to the listener than the front speakers.
• The test tone will automatically be generated to help you judge the sound level of each speaker.

I am having the same problem. I also have the combo dvd and theater system. I also read that the sub woofer is supposed to have a volume control on it but its not there. The only way to control volume is to connect to coby dvd player. This dvd player is beyond terrible. DVD looks bad and sound is miserable. I hooked up xbox 360 to my samsung 52 inch, then on the outputs of my tv into the inputs of the "TV" section on the Coby Sub woofer. At this point great sound quality comes from the xbox and all speakers, but the volume is uncontrollable and is blasting loud. Tv volume control does not work either. I am stuck like chuck and have not found a solution. This has to be one of the worse purchased i have ever made because i am forced to use a terrible DVD player just to get some sound through the speakers. I dont understand why on the speaker systems you buy without dvd combo has a volume control on subwoofer, but on the combo subwoofer doesnt have it. Just terrible. I will continue to look online and try and find a solution other than smash it to bits.

have you tried powering down unit and seeing what happens?

the RFI suppression is gone... It is normally a small capacitor that conducts the AC noise from the ignition to ground.

You probably "popped" the coil on the speakers - or atleast the pass through coil on the subwoofer.

Remember, your sub take all the audio, filters out the high stuff and amplifies the low freqs.... the high stuff is passed onto the other speakers....
if you have distroyed the pass through coil - speakers don't work...
First, try connecting the speakers directly. (leave the sub out of the system)... do they work? If yes, then the pass through on the sub is shot and must be replaced before any further troubleshooting can be done.

-Jim

The wireless rear speakers aren't wireless per se. They have to be connected to a receiver box and it's that box that brings in the system's wireless transmissions, eliminating in this way any cable runs from the front of the room to the back. 

If it is fused check to see if the fuse is blown... Start with power and work you way down from there.
Power to the sub.
Signal to the sub
Cabling to sub
Check the speaker itself to see if it is good.

john

Well as I see from the owner manual for this device the sub is active one and my opinion is that electric is your problem.The power of the sub and main unit must be on the same phase otherwise you'll hear brrrrr or frequency of your main unit power supply on the sub.Thats why sound changes when you open or close the door.Take one power distribution cord (get power for bought devices from the same place) and connect main unit and the sub on it and then try.I hope that this will help you

Here's the fix: power off the sub-woofer and wait for 60 secs before powering it on again. My rear receiver works every time now.  I guess the sub-woofer isn't just a dumb speaker; it has some kind of smarts in it too.
Prior to this, I had only tried cycling power to the DVD player itself.  I also re-seated the two, fat cables connected to the junction box. One of them had worked itself slightly loose and the result was completely absent speaker channels.