Sound cuts out

Could be a number of things: Inadequate ventilation; running with a small wiring short somewhere; speaker Ohms rating too low for the receiver. These are just the main ones to check.

Try the following:

1) Switch the unit off completely, using the powerswitch on the back of the bass box.
2) Switch the unit back on via de switch on the bass box.
3) The display should read BOSE 321 and than be dark.
4) Insert a CD and switch the unit on with the remote by selecting the CD/DVD mode.
5) When the sound is now OK, it means that you need to contact Bose to ask them for the latest software update for your unit. After updating your system. The problem will not reoccur.
6) in case the problem continues and at start-up using a CD, no improvement of sound is heard, the system should go into repair. Contact Bose in your country and ask for return instructions.

It sounds to me that some part of the circuit possibly an IC is overheating after several hours and develops a fault.
This will be a very tricky thing to track down. So maybe best to take it to an authorised service agent.

bad lcd panel

try unplugging it to reset it 7 call the manufacturer. is it under warranty, do you have a dct?

have a 42 inch rca 42PA30RQ NO PICTURE OR SOUND WHAT CAN I DO MY SELF BEFORE SPENDING A LOT OF MONEY TAKING TO A REPAIR SHOP

solution to Both our problems is this, call Philips, "it just so happens that we have a rapid replacement program for this particular system"-"there seems to be an internal electrical problem", so I'm sending it back to them.......

I have had the same problem. Only differance is that I run a freeview box though my 940 mw. I thought it was that playing up. Also I all the keys are locked on the unit itself. The remote works everything but when I press any buttons on the monitor you get a 'keys locked info' up on screen. Its doing my head in!!!

Hi, Probably you first have to determine if the "no sound" is the TV or your source (cable box). Try another source such as a DVD player hooked to the audio/video inputs of the TV, if still no sound then you have confirmed that it is the TV, if there is sound, then it is the cable box (in some cases it may be just the cables connecting the cable box and the TV; try wiggling it a bit, might just be loose). If it is the TV, go through the routine of the setup/menu; look for audio, stereo, SAP, etc, try different settings (pls log down original setting in case no change and you have to revert back). If all else fails, try the "thump test" this will help you determine if its a loose/cold solder problem inside the TV. Give your TV a good whack at the side, top or back, if sounds comes on even briefly, it's a loose/cold solder problem, if not then you probably have to have the unit serviced by a qualified professional. Good luck and kind regards.

You need to have service on the set, the audio portion on the main board is going out