Kenwood HU won’t turn off

[High Cs]

I have a KMR 700U with a wired remote KCA-RC107MR that have worked flawlessly for many years. When I press the power button on the head unit to turn the unit off it powers back up after about 7 seconds. If I press the power button on the wires remote it does nothing. Everything else seems to work fine.

 

[GA_Boater]

Take the battery out of the remote and see if you turn the head off and it stays off.

Reread - Disconnect the remote and try it.

 

[High Cs]

I disconnected the remote from the back of the pre-amp and the head unit still powers up all by itself after about 7-10 seconds.

 

[dingbat]

You have a short or a failing component (Switch) in the head unit. Most likely the power switch itself.

The 7 seconds is interesting though. Too long for a amp dwell.