I'm not getting any sound in tuner mode. I have a "Decoder off" message.

Due to the age of the North America/Canada model, I would check the power supply for stability.

do you get sound from both speakers in mono mode? but no sound from either speaker in stereo mode?

bad soldering on the stereo/mono switch

Check on what mode is audio setup SAP MONO STEREO,that could be case.
On main menu AUDIO SETUP.... (chose STEREO recomended)

Hello
Can't make sound from mono to auto is your problem I thinks and posts this solution.
Hit the "Menu" button and surf through, come to "Sound Adjust" window.
The settings allow you to change and adjust sound in your TV. There are Bass, Treble and Balance control to adjust to your individual taste.
To adjust them
1. Press Menu button.
2. Press UP or DOWN button to select the desired item.
3. Press => or 4. Press EXIT button when finished.
When adjusting the parameter of "Balance" control, always set it to mid position to get stereo sound from both speakers. If it is set to any extreme end, there will be no output from the speaker of that side, and will hear as mono.
If you press "0" [Zero] button, you can reset the sound settings to it Factory settings.
To select 'Streo mode;
1. Press "Menu" button.
2. Press UP or DOWN button to select MTS [Multi-channel Telivision Sound].
3. Press => or [The ON AIR arrowtells you if a broadcast is in stereo AND/OR contains the SAP.
Press "Exit" button when finished.

Keep the TV in stereo mode to get the best sound quality. The sound will work in stereo

mode even if a certain broadcast is in mono sound only.

Choose the mono setting to reduce excessive noise on a certain channel or broadcast.
Selecting SAP will allow you to hear an alternative soundtrack, if one is available.

Maybe an FM amplified indoor antenna could help you to get a stable FM signal.

Your SAP/MTS function is most likely turned on. This feature has 3 modes: Stereo, Mono and SAP. Stereo and Mono are easy to understand, it's the SAP that can get you. SAP stands for Second Audio Production. It is used to provide weather, information or an additional language translation of a program. Some broadcasters simply transmit the mono audio over the SAP audio channel when the are not using it for other purposes. Other broadcasters simply do not use it, which does not give you any audio. Look on your remote for a SAP or MTS button. If you do not see one, look in your TV user menu for this feature. If you are using a cable box, look in the audio menu of the cable box. You are looking for something set to SAP... just change it to STEREO. I hope this was helpful.

KDC-M4527
CD Receiver with WMA/MP3 decoder Built-in

Audio Features
- 4 x 50 watt maximum output power by MOSFET Power IC
- 1 RCA preout, 2 Volt
- Separated tone control: Bass/Mid/Treble
- Source tone memory
- Balance/Fader/Loudness control
- System Q: Sound control with pre-programmed tone curves
- Auxiliary input with optional unit (CA-C1AX or KCA-S210A)
- Attenuator (-20dB) with smooth volume return

Tuner Features
- 24 presets: 18 FM, 6 MW/LW
- K3I clean reception Tuner
- Radio Data System (RDS) with Radio text
- Auto memory entry (AME)
- Up/Down seek tuning
- Local Seek
- FM Stereo/Mono selector
- Tuning mode : Auto1/Auto2/Manual
- DAB reception with optional unit KTC-9090DAB

CD Features
- CD-R/RW compatible
- 8 times over-sampling
- 1 bit D/A converter
- S/N ratio: 105 dB
- Dynamic range: 93 dB
- Channel separation: 85 dB
- MP3 decoder with ID-3 Tag display
- MP3 decoder MPEG-1/2 Audio layer-3
- WMA decoder: windows media audio
- CD-text
- Random/Repeat/Scan Play

Changer Features
- Dual changer control capability (CH1/CH2 & AUX)
- CD-Text with compatible units
- Disc Name Preset System with compatible units
- Disc & Track repeat
- Disc & Track scan
- Disc & Magazine random play

General Features
- Removable faceplate
- Protection case for faceplate
- Disabled System Indicator (DSI)
- Mono Colour LCD display
- 14 segments x 8 characters
- White LED display backlight
- Selectable key illumination (red or green)
- 24 hours clock
- Auto Dimmer
- 2 way telephone mute
- All off select (20/40/60 min.)
- Built-in fuse/coil
- ISO A/B connector
- Remote sensor for optional remote control unit
- OEM steeringwheel remote hardwired connection
thats the most i could get go here http://kenwoodusa.com/Contact/ and have them send u one hopw that helps.

tuner or stereo decoder ic or cap in its decoder circuit, your dvd is sending audio through patch cords bypassing tuner - decoder audio circuit. advise just getting digital tuner from oboma and that will cure your problem.

no. that is not true. the person you spoke to obviously didn't know what they were talking about. you mean to tell me that everyone that has a cable or satellite box with a stereo or hd tv is not going to receive stereo sound? really,think about it. you only need a cable box( for now ) if you have premium channels (hbo,showtime etc). you can connect the cable line right into the tv if you only have basic cable. look at the back of your cable box. if you have a red, white, & yellow audio/video output, then the box is stereo.connect these outputs to your tv. this connection however is not hd.you will need a hd box with a hdmi cable for hd .To put the tv on stereo mode, there should be a way via the menu and/or the audio button on the remote to get it off mono and put it on stereo. your manual should at least show you around the settings of your tv.
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Probaby the stereo decoder IC went bad or a supply voltage to it is too low or noisy. If it has audio output jacks on the back of the TV, connect it to an external amplifier and see what that sounds like. If it is ok in stereo or mono mode then the amplifier in the TV is bad. This will prove that the stereo decoder is ok.