Kenwood 6020dnx shows DC offset error ONLY AFTER I started the car.. before it was playing music fine. When I started the car it showed the message

The error message "Miswiring DC offset" on a Kenwood DDX69028 stereo typically indicates a problem with the wiring or power supply. Here's what you can try to resolve the issue:
1. Check the Wiring Connections: Ensure that all the wiring connections are properly made. Verify that the power, ground, and speaker wires are securely connected and not loose or disconnected. Pay attention to any loose or exposed wires that may be causing a short circuit.
2. Check the Power Supply: Make sure that the power supply to the stereo is stable and within the specified voltage range. Use a multimeter to measure the voltage at the power wire connection and ensure it matches the recommended voltage for your stereo model.
3. Verify the Speaker Connections: Ensure that the speaker wires are properly connected and not shorted or crossed. Check for any loose strands of wire that may be causing a connection issue.
4. Inspect for Short Circuits: Look for any signs of a short circuit, such as bare wires touching each other or the vehicle's chassis. If you find any, isolate and insulate the affected wires to prevent further issues.
5. Reset the Stereo: Try resetting the stereo to its factory defaults. Refer to the user manual for instructions on how to perform a reset. This may help clear any temporary errors or glitches.
If none of the above steps resolve the issue, it is recommended to consult the user manual or contact Kenwood's customer support for further assistance. They will have specific troubleshooting steps and can provide guidance based on your stereo model and the exact error message you're experiencing.

GET THE USER MANUAL OR SERVICE MANUAL
AND SEE THAT THAT MEANS.
IT CAN BE,
12VDC TO THE (POWER) IS BAD 12VDC AND GROUND
OR (seems to me NOT POWER)

CAN mean one of speakers failing like this.(this)
1: shorted speaker, (CALLED VOICE COIL SHORTS
2: shorted speaker WIRES, to shorted to car body ground.
3 using wrong speaker if 2ohms is not allowed but 4-8ohms is allowed. or putting 2x 4 ohm speakers in parallel fails. as it will;./
4: amp is bad.(in the head end)


page 62 in your manual states

If the power is not turned on ("Miswiring DC Offset
Error", "Warning DC Offset Error" is displayed),
the speaker wire may have a short circuit or
have touched the chassis of the vehicle and the
protection function may have been activated.
Therefore, the speaker wire should be checked

THE REAL MEANING, (ME TOLD) IS ONE OF THE SPEAKER PRESENTS A OVERLOAD TO ANY AMP OUTPUT CHANNEL.
TO FIND THISONE MUST DISCONNECT SPEAKERS TO FIND IT.
YES SPEAKERS AND WIRES CAN SHORT.
A TECH EVEN TRIES TEST SPEAKER 1 AT TIME TO PROVE THIS.
IF ALL TESTS FAIL THE AMP IS BAD.

Basically that means there is an overload or some form of power issue with the machine.
The best thing to do is reset the unit to start with. Do you have the manual?

[email protected]

You has DC Offset(a damaged amplifier) This is most definitely not a DIY type of repair. If you're interested in a repair, or have further questions, please visit my website at audioserviceclinic.com. Thank you.

Saying miswiring dc offset error i unplug batt radio works for a sec till i turn up then comes back on

You could have a speaker wire or speaker tensile (flex) lead that is shorting to ground, on a floating ground BTL head unit (all that claim 18-25 watts RMS per channel) all 8 speaker wires are always floating at about half of the supply voltage, IE if the voltage is 14.4 with the engine running the speaker wires will all measure about 7 volts to ground.

The flex leads are the wires on a speaker that go from the terminals to the cone.

Firstcheck whether it is still in demo mode. to cancel demo mode -- press [enter]when message flashes "to cancel DEMO mode press ENTER key" for 10-15 secs. Turn the control knob to "YES" and press ENTER key. If it still fails to operate properly press the rest button to return to factory settings(The reset button is behind the front console)

hold down preset 3 & 6 + reset
press preset 1 - shows dc err
press preset 1 - shows dc ok
press preset 2 - shows dc 2-4
press preset 2 - shows dc 2-0
then unit should be ok with eeprom reset

Do you have more than one output? Does the radio have its own amp (it will have cooling fins on the back)? If yes to the first Q, its fixable. Yes 2 the 2nd Q, its trash.

your going to have to format your mp3 player.